Find the Value of the Variable That Satisfies the Equation $$3 \mathrm { x } + 16 \mathrm { x } = 15$$

Multiple Choice

Find the value of the variable that satisfies the equation.
- $$3 \mathrm { x } + 16 \mathrm { x } = 15$$

A) $x = 285$
B) $x = - 4$
C) $x = \frac { 19 } { 15 }$
D) $x = \frac { 15 } { 19 }$