251-124=y

Solution for 251-124=y equation:

Simplifying
251 + -124 = y

Combine like terms: 251 + -124 = 127
127 = y

Solving
127 = 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.
127 + -1y = y + -1y

Combine like terms: y + -1y = 0
127 + -1y = 0

Add '-127' to each side of the equation.
127 + -127 + -1y = 0 + -127

Combine like terms: 127 + -127 = 0
0 + -1y = 0 + -127
-1y = 0 + -127

Combine like terms: 0 + -127 = -127
-1y = -127

Divide each side by '-1'.
y = 127

Simplifying
y = 127