\(Hi~~~~\mathbb{MARI} \\ \\ \begin{cases}x+3y=-1~~~~~(I) \\ 2x+2y=6~~~~~(II)\end{cases} \\ \\ Simplyfing~(II) \\ \\ 2x+2y=6 \\ x+y=3 \\ \boxed{x=3-y}~~~~~~(III) \\ \\ (III)~in~(I) \\ x+3y=-1 \\ (3-y)+3y=-1 \\ 3-y+3y=-1 \\ 2y=-4 \\ \boxed{\boxed{y=-2}} \\ \\ Replace~(y=-2)~in~(III) \\ x=3-y \\ x=3-(-2) \\ \boxed{\boxed{x=5}} \\ \\ solution ~(5,-2)\\ \\ \\\)
\(\mathbb{xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx} \\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Regards!!\)
