Answer
$y=\frac{4}{3}x-\frac{20}{3}$
when $x=-7$ then
$y=-16$
Work Step by Step
$-12x+9y=-60$
$9y=12x-60$
$y=\frac{12}{9}x-\frac{60}{9}=\frac{4}{3}x-\frac{20}{3}$
when $x=-7$
$y=\frac{4}{3}\times(-7)-\frac{20}{3}=-\frac{28}{3}-\frac{20}{3}=-\frac{48}{3}$
$y=-16$
