#### Answer

x = $\frac{1}{15}$

#### Work Step by Step

3 + 5(2x - 4) = -7(5x + 2)
Distribute:
3 + 10x - 20 = -35x - 14
10x - 17 = -35x - 14
Add 35x to both sides:
45x - 17 = -14
Add 17 to both sides:
45x = 3
Divide both sides by 45:
x = 3/45
x = $\frac{1}{15}$