Solve by Addition or Substitution $x+y=15$ $\mathrm{x}-\mathrm{y}=-3$ A) $(6,9)$ B) $(-6,10)$ C) $(5,10)$ D) $\varnothing$

Multiple Choice

Solve by addition or substitution.
- $x+y=15$
$\mathrm{x}-\mathrm{y}=-3$

A) $(6,9)$
B) $(-6,10)$
C) $(5,10)$
D) $\varnothing$