Question

2x-10y=-14. 10x-10y=10 ?

Answer 1

2x-10y=-14
10x-10y=10 (-1)↓

-10x+10y=-10
2x-10y=-14
-8x=-24
x=-24 / -8
x=3

3(10)-10y=10
-10y=10-30
-10y=-20
10y=20
y=20/10
y=2

Espero ter ajudado!