Solve the Equation for the Unknown Quantity $7 x + 8 = 5 x + 22$

Solve the equation for the unknown quantity.
- $7 x + 8 = 5 x + 22$

A) $\frac { 5 } { 2 }$
B) 7
C) $\frac { 7 } { 6 }$
D) 9