Answer:
y = -2
Step-by-step explanation:
Step 1: Define
-3x - y = 56
x = -18
Step 2: Substitute and solve for y
-3(-18) - y = 56
54 - y = 56
-y = 2
y=-2
this is because if you multiply -3 by -18 you get 54 and 56-54 is 2 so -y is 2
