Answer:
Step-by-step explanation:
It helps to rearrange the question so like terms are together.
7x - 5x + 4 - 8 = 0
Add and subtract like terms.
2x - 8 = 0
Isolate x to find its value.
2x - 8 + 8 = 0 + 8
2x = 8
Divide by 2 on each side.
2x/2 = 8/2
x = 4