123=y+168

Solution for 123=y+168 equation:

Simplifying
123 = y + 168

Reorder the terms:
123 = 168 + y

Solving
123 = 168 + 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.
123 + -1y = 168 + y + -1y

Combine like terms: y + -1y = 0
123 + -1y = 168 + 0
123 + -1y = 168

Add '-123' to each side of the equation.
123 + -123 + -1y = 168 + -123

Combine like terms: 123 + -123 = 0
0 + -1y = 168 + -123
-1y = 168 + -123

Combine like terms: 168 + -123 = 45
-1y = 45

Divide each side by '-1'.
y = -45

Simplifying
y = -45