2m/3 + 1 = 4, m=? A BASIC Algebra problem MANY will get WRONG!
HTML-код
- Опубликовано: 29 фев 2024
- How to solve a 2 step single variable linear equation - basic algebra.
TabletClass Math Academy - TCMathAcademy.com/
Help with Middle and High School Math
Test Prep for High School Math, College Math, Teacher Certification Math and More!
Popular Math Courses:
Math Foundations
tabletclass-academy.teachable...
Math Skills Rebuilder Course:
tabletclass-academy.teachable...
Pre-Algebra
tabletclass-academy.teachable...
Algebra
tabletclass-academy.teachable...
Geometry
tabletclass-academy.teachable...
Algebra 2
tabletclass-academy.teachable...
Pre-Calculus
tabletclass-academy.teachable...
If you’re looking for a math course for any of the following, check out my full Course Catalog at: TCMathAcademy.com/courses/
• MIDDLE & HIGH SCHOOL MATH
• HOMESCHOOL MATH
• COLLEGE MATH
• TEST PREP MATH
• TEACHER CERTIFICATION TEST MATH
Got it. 7.5 simple equation. Thanks for the fun.
Answer b
Ans: b
Why?
We have to multiply the whole equation by 3 in order to get the denominator away. Since we are multiplying 3 by -2 and 3, we would get this:
2m - 6 = 9
Why 2m? Because we multiplied 3 by the fraction 2m over 3 and we cross-cancel them which would result to 2m
Then, we get 2m = 9+6
2m = 15
m = 15/2 => m = 7.5
Easy math! Thank you for sharing this problem with us!
15/2=7.1
Exactly right!
Or add the 2 to both sides, multiply by 3, divide by 2
Why is the equation in the headline different?
Seems like your method was way over complicated ? I did it in my head in about 20 seconds
2M/3 - 2 = 3
add 2 to both sides
2M/3 = 5
multiply both sides by 3
2M=15
divide both sides by 2
M= 7 1/2 or 7.5 however you want to state it
The problem on the 'blackboard' and the title of the video are different.
Just a different example. Easy typo kind of mistake.
Yes, you are right. The teacher should know about the discrepancy. Otherwise, he's confusing his viewers.
@@gregc.mariano9226 well, maybe. But the different example he posted was based on exactly the same principle, and I think a brief look at the two of them shows that. So, on balance, I don't think it's a bad error. I do a lot of proofreading, where I have to be quite pedantic and I normally find an error in the first paragraph. Often the first sentence! Errors are everywhere; its up to us to realise that and not take everything as gospel until we've examined it, tested it and understand it.
If you think about the number of posts made on this channel, it's a small error in a lot of good stuff.
You have no idea how far I’ve come since I’ve started watching your channel. I’m 70, and haven’t understood math since 6th grade, including 4 years at university. Starting 7th grade, I was “given” ‘D’s’ for effort. I am now considering taking your beginning math course. If someone had told me 6 months ago that I would be interested in taking a math course, I would have looked at them like they had 2 heads. THANKS!!!
I too had trouble with math until the 10th grade when I took trig. From D's and C's to an A overnight, I ended up tutoring everyone else. I loved trig for to me it was about repeatable patterns.
Afterwards I felt confident to tackle harder math. Flew right through Calc I, II, III and differential equations. What I learned in trig was to work the problems into a format that made sense to me, where equations can be manipulated and played with.
We learn too much structure and format in school that is quite rigid, and unfortunately people never recover from it.
First loose the minus 2 to the other side of the equation so m . 2/3 = 3+2 = 5
then inverse the 2/3 to 3/2 on the other side so m = 5 x 3/2 = 15/2 = 7½ or answer B
I just back-titrated the whole thing. The fraction -2 had to equal 3, so 3+2=5. The fraction had to equal 5. I saw the 3 in the denominator, so 3X5=15. The numerator had to equal 15. m X 2 had to equal 15. 15/2=7.5. No calculator needed, I had it figured out in less than 1/2 of a minute.
To prove it, 7.5 X 2=15. 15/3=5. 5-2=3. that simple!
Thank you so much, had 12, however nice to reviewthe steps!! thank you
Got it without trying the choices which I could have done of course.
But my teacher wants me to show my process so there it is:
2m/3 - 2/1 = 3
2m/3 - 6/3 = 3
2m - 6/3 over 3 = 3/1
Then you take the cross product i.e. (2m - 6) times 1 = 3 times 3
You are left with 2m - 6 = 9
Add 6 from both sides and you get 2m = 15
Divide both sides by 2 and you get m = 7.5
It looks like a lot of work but it takes more time writing it than it takes to solve the problem. ;)
In fact it's faster than trying all the options one by one.
I thought you could multiply by 3 both sides to get 2m =15. that ok?
That's what I did...
After you move the 2 across
You’re good. That’s the quick way. Or you can take 24 minutes like the video. I like your way.
🎉b 7.5 from the head
Is balancing the equation the same as solving the equation?
No and yes. No. Because the equation is balanced at the start. But also yes, because if you get the equation balanced down to only 1 of the variable on one side, then you have the answer.
@@andrewm6424
Thank you
Honourable sir can I humbly ask what is you profession. Thanks
7.5. 2m/3x3 =2x3 9150. Therefore 2m=15. m-7.5 Basic Algebra ( although I was a Maths and Electronics lecturer @ a College level.)
b) 7.5
At the title card, my answer is b) 7.5.
1) Rewrite as 2/3 * m - 2 = 3
2) Add the 2 to both sides: 2/3 * m = 5
3) Multiply both sides by 3: 2 * m = 15
4) Divide both sides by 2: m = 7.5.
2m-(3×2)=9, 2m=9+6 or 15/2 = 7.5
I love doing math with you
Hi Teacher, pls ensure that the Question written on the board is the same as what it is written above. They are different. Thanks.
My method was not the easiest but I'm a "cross product" kind of guy. ;)
I need to see the easier way better.
Don't know how the 9150 got mixed up in my answer please disegard.
1. Add 2 to both sides (2m/3 = 5)
2. Multiply both sides by 3 (2m=15)
3. Divide both sides by 2 (m=15/2=7.5)--b.
7.5
7.5, which is b)
You are a master of confusion! Glad you weren’t my math teacher!
2m/3-2=3, 2m/3=5, 2m=15, M=7.5
b) 7,5
7.5.
B 7.5
B. 7.5
B) 7.5
7 5
Why do you try to solve 5 sec oral question in 10 min!
2(4)/3-2=,10/3=3.1 (m+1m-3)
I got it!!! YAY
7-5
1/3
b)
2m-6=9
2m=15
m=7.5
-3/2
Many will not get this wrong if you fully understand very basic Algebra This is beginning Algebra Currently right now The requirements for a High School Diploma in many states is having 4 credits in math The level of math must be no lower than Algebra 2 So the students could have Basic ,Algebra Geometry , and Algebra 2 shop math and some science classes will also count as a math class however you need to be at the Algebra 2 level and you need 4 math classes To get an High School diploma
Over 90% of people who graduated never do this math once they finish High Schools with the exception of those who go to college You need to pass college Algebra to get a degree of any kind . Many parents say why do my kids need to know this ???I didn’t need to know this when I went to high school Well requirements have changed ..Little Johnny and Little Sally need to know this to get a GED or High School Diploma
B
m=7.5
John this is kindergarten examples, why so much drama?
First add 2 to both sides
You do not add 2 to each side
You just move the 2 across and change sign
@@thenetsurferboy students are taught to do it the way the OP stated.
@@thenetsurferboymoving the two across and changing the sign IS adding 2 to each side. Adding 2 to each side is the mathematical way to say it.
Yes but with 3 or 4 terms in the equation it is too cumbersome@@iseeyou8781
@@thenetsurferboyIt's an equation. That means the left hand side is the same as the right hand side - that's the definition of an equation.
So when you manipulate an equation like this you must do the same thing to both sides so that both sides remain equal to each other.
Yes, you can think of it as moving the 2 across and changing its sign, but the reason you can think of it like that is because that is the effect of adding 2 to both sides.
The answer is 7.5
2m=15
@user stop it! This is not for you only. There are millions of people who do not understand maths. They need these tricky explanations to know what to do. This is not for you. You know maths. Go get your own pod and teach gifted students like you.
Sir I am just restarting math studies late in my life. I am using your podcast at the moment. They are very helpful but they are very, very verbal. I eat too much discussion and commentary. I believe that if you talk less and just went right into the explanation , it would be much more helpful. Thank you.
.
5 seconds to solve vs a 23min+ video to actually show how it is solved in less than a minute. Seriously.
talk too much
Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz,
Uh, is the lesson ended already? In just 24 minutes?
😂😂😂
Stop advertising
Absolute torture watching your videos, can not do it anymore.
I should know who ur target audience is
Well it is first year algebra, so grade 7
U take too long my friend to solve a problem just keep it short
23 minutes?
D1/3
4.5 is M (in my head figure)
9
b) 7.5
7.5.
B 7.5
7.5
B
b) 7.5
b)7.5
7.5
7.5
7.5
7.5
7.5
B
B
B
B