A very tricky Math Olympiad Exponential Problem | You should know this trick!

[@dumitrudraghia5289]

FRUMOS!

[@MathBeast.channel-l9i]

Thanks a lot SIR😊

[@dietrichschoen7340]

3^(x)[1+3+3^(2)]=27
3^(x)=27/13=2,08
x*ln(3)=ln(2,08)
x = ln(2,08)/ln3=0,665