Solve the Equation $$| 3 x + 7 | = | x + 5 |$$

Multiple Choice

Solve the equation.
- $$| 3 x + 7 | = | x + 5 |$$

A) $\{ - 1 \}$
B) $\{ - 1 , - 3 \}$
C) $\{ 1,3 \}$
D) $\varnothing$