Question

Ex.5 daca m-ar ajuta cineva ...

Answer 1

12x-4y=10x+5y⇔2x=9y I ÷y
                           $2 \frac{x}{y} =9$
$\frac{x}{y} = \frac{9}{2}$

Answer 2

(3x-y)/(2x+y)=5/4
4*(3x-y)=5*(2x+y)
12x-4y=10x+5y
2x=9y
x/y=9/2=4,5