-4x - 7 +10x = -7 + 6x
Combine like terms on left side.
6x - 7 = -7 + 6x
Add 7 to both sides.
6x = 6x
Subtract 6x from both sides.
0 = 0
This means there are infinitely many solutions.
-4x - 7 + 10x = -7 + 6x
10x - 4x - 6x = -7 + 7
0 = 0
This means there are infinite solution to the equation