Question

−3|2x + 6| = −12

Answer 1

A equation with 2 solutions, a priori,
\[f\ x<-3\Rightarrow -3(-2x-6)=-12\Rightarrow x=-5\]
\[f\ x>-3\Rightarrow -3(2x+6)=-12\Rightarrow x=-1\]

Answer 2

thanks