Simplifying
(5x + 15) = 28
Reorder the terms:
(15 + 5x) = 28
Remove parenthesis around (15 + 5x)
15 + 5x = 28
Solving
15 + 5x = 28
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + 5x = 28 + -15
Combine like terms: 15 + -15 = 0
0 + 5x = 28 + -15
5x = 28 + -15
Combine like terms: 28 + -15 = 13
5x = 13
Divide each side by '5'.
x = 2.6
Simplifying
x = 2.6