123=56+x

Solution for 123=56+x equation:

Simplifying
123 = 56 + x

Solving
123 = 56 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
123 + -1x = 56 + x + -1x

Combine like terms: x + -1x = 0
123 + -1x = 56 + 0
123 + -1x = 56

Add '-123' to each side of the equation.
123 + -123 + -1x = 56 + -123

Combine like terms: 123 + -123 = 0
0 + -1x = 56 + -123
-1x = 56 + -123

Combine like terms: 56 + -123 = -67
-1x = -67

Divide each side by '-1'.
x = 67

Simplifying
x = 67