Answer:Simplifying
y + -12 = 20
Reorder the terms:
-12 + y = 20
Solving
-12 + y = 20
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '12' to each side of the equation.
-12 + 12 + y = 20 + 12
Combine like terms: -12 + 12 = 0
0 + y = 20 + 12
y = 20 + 12
Combine like terms: 20 + 12 = 32
y = 32
Simplifying
y = 32