Answer:
x = 1
Explanation:
The method that is used is distributive property.
What is Distributive Property?
The property that terms in an expression may be expanded in a particular way to form an equivalent expression.
Steps:
Simplifying
5(2x + -8) + 15 = -15
Reorder the terms:
5(-8 + 2x) + 15 = -15
(-8 * 5 + 2x * 5) + 15 = -15
(-40 + 10x) + 15 = -15
Reorder the terms:
-40 + 15 + 10x = -15
Combine like terms: -40 + 15 = -25
-25 + 10x = -15
Solving
-25 + 10x = -15
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '25' to each side of the equation.
-25 + 25 + 10x = -15 + 25
Combine like terms: -25 + 25 = 0
0 + 10x = -15 + 25
10x = -15 + 25
Combine like terms: -15 + 25 = 10
10x = 10
Divide each side by '10'.
x = 1
Simplifying
x = 1