Answer:
-4 (negative 4)
Step-by-step explanation:
-15x + 5 = -10x + 25
First subtract 5 from both sides
-15x = -10x +20
Then, add 10x to both sides
-5x = 20
Now, Divide both sides by -5
x = -4
To check you work substitute x for -4 in the original problem.
-15(-4) + 5 = 65
-10(-4) +25 = 65
