123=b+23

Solution for 123=b+23 equation:

Simplifying
123 = b + 23

Reorder the terms:
123 = 23 + b

Solving
123 = 23 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
123 + -1b = 23 + b + -1b

Combine like terms: b + -1b = 0
123 + -1b = 23 + 0
123 + -1b = 23

Add '-123' to each side of the equation.
123 + -123 + -1b = 23 + -123

Combine like terms: 123 + -123 = 0
0 + -1b = 23 + -123
-1b = 23 + -123

Combine like terms: 23 + -123 = -100
-1b = -100

Divide each side by '-1'.
b = 100

Simplifying
b = 100