Answer: X= (-∞,∞)
Explanation:
Simplifying
5(2x + -4) = 10x + 20
Reorder the terms:
5(-4 + 2x) = 10x + 20
(-4 * 5 + 2x * 5) = 10x + 20
(-20 + 10x) = 10x + 20
Reorder the terms:
-20 + 10x = 20 + 10x
Add '-10x' to each side of the equation.
-20 + 10x + -10x = 20 + 10x + -10x
Combine like terms: 10x + -10x = 0
-20 + 0 = 20 + 10x + -10x
-20 = 20 + 10x + -10x
Combine like terms: 10x + -10x = 0
-20 = 20 + 0
-20 = 20
Solving
-20 = 20