Answer:
Simplifying
5x + -20 = 70
Reorder the terms:
-20 + 5x = 70
Solving
-20 + 5x = 70
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '20' to each side of the equation.
-20 + 20 + 5x = 70 + 20
Combine like terms: -20 + 20 = 0
0 + 5x = 70 + 20
5x = 70 + 20
Combine like terms: 70 + 20 = 90
5x = 90
Divide each side by '5'.
x = 18
Simplifying
x = 18
