Question

5x-y =25
-2x+2y =14

Aguem me ajuda a resolver essa:? pfvor

Answer 1

5x-y=25
-2x+2y=14

-y=25-5x
y=-25+5x

-2x+2(-25+5x)=14
-2x-50+10x=14
-2x+10x=14+50
8x=64
x=64/8
x=8