Question

qual e a conta armada disso 9×-3-4×=8×-7+×=?

Answer 1

9x-4x-8x-x=+3-7
9x-13x = -4
-4x=-4 (-1)
4x=4
x=4/4 = 1

Answer 2

9x-3-4x=8x-7+x
9x-4x-8x-x=-3+7
-4x=4
4x=-4
x=-4/4
x=-1

Espero ter ajudado ; )