Answer is neither is correct
The answer is -4
Step by step
3x + 2 = 10 + 5x
Combine like terms on either side of =
Subtract 5x from both sides to isolate x
3x - 5x + 2 = 10 + 5x - 5x
-2x + 2 = 10
Now subtract 2 from both sides to isolate constants
-2x +2 -2 = 10 -2
-2x = 8
Divide both sides by -2 to solve
-2/-2 x = 8/-2
x = -4