Question

-6z+12 factor out the coefficient of the variable

Answer 1

reverse distributive
ab+ac=a(b+c)
factor each
-6z=-1*2*3*z
12=2*2*3

so common is
2*3=6
6=a
-6z/6=-1z
12/6=2
6(-z)+6(2)=6(-z+6)