Answer:
Infinitely many.
Step-by-step explanation:
Combine like terms as shown below
x + 12 + 2x = 20 + 3x - 8
Side one
x + 2x = 3x
Side two
20 - 8 = 12
Set the equation up again
3x + 12 = 3x + 12
The equation is the same on both sides which means that the equation cancels itself out.
3x - 3x = 0 and 12 - 12 = 0
0 = 0 so there is infinitely many solutions because both sides equal the same thing.
