Question

RESOLVER
2x-y=35
x-2y=35

Answer 1

Primeramente

2x-y=35

2x=35+y

x=(35/2) + (y/2)

Luego

x-2y=35

(35/2)+(y/2)-2y = 35

-2y + y/2 = 35-(35/2)

-3/2(y) = 35/2

y = -35/3

Entonces

x-2y = 35

x - 2 (-35/3) = 35

x = 35/3