72-15=y

Solution for 72-15=y equation:

Simplifying
72 + -15 = y

Combine like terms: 72 + -15 = 57
57 = y

Solving
57 = y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-1y' to each side of the equation.
57 + -1y = y + -1y

Combine like terms: y + -1y = 0
57 + -1y = 0

Add '-57' to each side of the equation.
57 + -57 + -1y = 0 + -57

Combine like terms: 57 + -57 = 0
0 + -1y = 0 + -57
-1y = 0 + -57

Combine like terms: 0 + -57 = -57
-1y = -57

Divide each side by '-1'.
y = 57

Simplifying
y = 57