Answer:y=-1/2
Explanation:
-3(2y+7)=-18
Distribute the -3 into the parenthesis.
-6y-21=-18
To isolate -6y, you must move the -21 to the other side, so you add 21 to both sides.
-6y=3
After -6y is isolated, you must isolate the y, so divide both sides by -6
y=-3/6
Simplify the fraction
y=-1/2