Why do I not use distributive properties? Reddit order of operations with fractions problem
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- Опубликовано: 1 окт 2024
- We will go over an order of operation problem with fractions: 3/5 * (1/5 + 4/5)
This question is from Reddit: / afmwjq8llx
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Me watching this despite studying calculus
Bro is it right calculus can be use to find area under the curve?
@@a.kofficial6140Yea, and much more
@@a.kofficial6140 yes, integration calculus
@@a.kofficial6140 Yes. You can use definite integrals to do so.
Me watching this despite getting a math degree from UCLA.
Often there is more than one valid way to reach the solution and all of those ways reach the same answer. It makes good sense first to look for the easy solution. There is less chance for error, and it saves time.
I'd love to see a series in which he solves final exams
from highschool from all around the world!
Like this comment if you would like to see this series
happen!
I can provide the final exam from Romania if
interested.
Love your content
You can, but like, why would you?
These random math problems from reddit are really helpful tho❤
To everyone fighting in the comments:
The reason he doesn't distribute is because it's easier to do the inside first. There's nothing stopping you from distributing right away
Or ask Terrence Howard
I'm still worried about Facebook "math" that thinks "OoO must go Left to Right" to get 3.8 instead. Thanks for pointing out that it's 0.6 either way
early !?
2130th viewer
1/5+4/5=1. thats why.
First
First commenter*
Cringe
nice
What!
Your wrong
If you distribute you get
3/25 + 12/25 = 15/25 = 3/5!!!
That's exactly what is shown in the video. Where is the error?
He gives impression you can’t
Me if I was a grown ass man that didn't get taught 3rd grade math
It's the same thing, he is using BEDMAS brackets first so you solve the sum in the bracket
@@velazquezamigueldid you actually watch the video? He says verbatim, "The answer to your question is that we can in fact actually use the distributive property. Let me show you."
*THE COEFFECIENT OF THE EXPRESSION (1/5 + 4/5) IS JUST 1. SO NO, YOU CAN'T DISTRIBUTE THE 3/5 LIKE THAT IN A NON-1 COEFFECIENT EXPRESSION.*
Insanity lol. Both work; it's about which is more efficient in various situations. That is the entire point of the video. No, changing the sum in parenthesis to not be 1 changes nothing other than making it less obvious that sometimes evaluating an inner expression first is less work. But the video kindly demonstrates the opposite as well.
@@lordruler69 That's not what I said dude....I said the coefficient of (1/5 + 4/5) is 1, because IT IS 1. The problem reads:
3/5 X 1(1/5 + 4/5)
You see this multiplication symbol, it separates the two expressions and the coefficient of the second expression is 1. It's already distributed. If you change that coefficient to anything other than 1, his method no longer works. The sum of the second expression is irrelevant, we're talking about multiplicate distribution. Watch this:
3/5 X 2(1/5 + 4/5) = 6/5
See what I mean now, the coefficient of the second expression changed and now his methodology doesn't match reality.
@@blankspace178Distribution means y time (a+b) = ay+by, distribution can go both ways because it's an equivalence
@@blankspace178Also the distribution usually means to become ay+by because the y gets distributed to the other terms.
@@BryanLu0 x + y (a + B) is NOT equivalent to x * y (a + b). One is a scaler, the other is a summation. You are completely misunderstanding what I have said.