Question

Daca 2a -b / 5a+ 3b= 1/2 atunci a/b = ?

Answer 1

$\dfrac{2a-b}{5a+3b}=\dfrac{2\dfrac{a}b-1}{5\dfrac{a}b+3}=\dfrac{1}2.$

Notăm pe a/b cu x, deci:

$\dfrac{2x-1}{5x+3}=\dfrac{1}2,\;sau\;4x-2=5x+3,\;sau\;x= -5.$

Green eyes.