11x+4-12x=12x+8+7x-4

x = 0

Step-by-step explanation:

Collect like terms;

-1x + 4 = 19x + 4

Subtract 19x from both sides

-20x + 4 = 4

Subtract 4 from both sides

-20x = 0

Divide both sides by - 20

x = 0

You answer is x=0

1) combine like terms: - 1x+4=19x+4

2) add - 1x to both sides: 4=20x+4

3) subtract 4 on the right side from both sides: 0=20x

3) divide both sides by 20: x=0