Answer:
8
Step-by-step explanation:
5x=10x-40
40+5x=10x
40=10x-5x
40=5x
40/5=x
8=x
5x = 10x - 40
Collecting like terms
5x - 10x = -40
-5x = -40
Dividing by -5
-5x/-5 = -40/-5
x = 8
