Question

10 × ( x + 1 ) - 5 × ( x - 2 ) = 70
Me ajudem nessa pfvr :((

Answer 1

10.(x+1) - 5(x-2) = 70
10x + 10 - 5x + 10 = 70
10x - 5x + 10 + 10 = 70
5x + 20 = 70
5x = 70 - 20
5x = 50
x = 50/5
x = 10

Espero ter ajudado.