Question

-10x-90=-8x+10 me ajudem por favor

Answer 1

-10x-90=-8x+10
-10x+8x=10+90
-2x=100
x=100/-2
x=-50

Answer 2

- 10x - 90 = - 8x + 10
- 10x + 8x = 10 + 90 
- 2x = 100
x = - 100/2
x = -50

Resposta: -50