Who knows how to solve 9 = - 2 + 2x + 1?

And also x-4 = - 9 + x

9 = - 2 + 2x + 1

Add 2 by both sides.

11 = 2x + 1

Subtract 1 from both sides.

10 = 2x

Divide by 2 on both sides.

5 = x

x - 4 = - 9 + x

Add 4 to both sides.

x = - 5 + x

Subtract x from both sides.

0 = - 5

There are no solutions.