#### Answer

x=8

#### Work Step by Step

Simplifying
5(28 + -2x) + -7x = 4
(28 * 5 + -2x * 5) + -7x = 4
(140 + -10x) + -7x = 4
Combine like terms: -10x + -7x = -17x
140 + -17x = 4
Solving
140 + -17x = 4
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-140' to each side of the equation.
140 + -140 + -17x = 4 + -140
Combine like terms: 140 + -140 = 0
0 + -17x = 4 + -140
-17x = 4 + -140
Combine like terms: 4 + -140 = -136
-17x = -136
Divide each side by '-17'.
x = 8
Simplifying
x = 8