Question

-34 + 91 = -3 (4x + 1) + 6x

Answer 1

X=-10
Look at the attached picture to see how to do it.

Answer 2

`-34 + 91 = -3(4x+1) + 6x\\57 = -12x - 3 + 6x\\6x = -60\\x= -10\\`

Thus x = -10.

Hope that helps!