123=abc

Solution for 123=abc equation:

Simplifying
123 = abc

Solving
123 = abc

Solving for variable 'a'.

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

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

Combine like terms: abc + -1abc = 0
123 + -1abc = 0

Add '-123' to each side of the equation.
123 + -123 + -1abc = 0 + -123

Combine like terms: 123 + -123 = 0
0 + -1abc = 0 + -123
-1abc = 0 + -123

Combine like terms: 0 + -123 = -123
-1abc = -123

Divide each side by '-1bc'.
a = 123b-1c-1

Simplifying
a = 123b-1c-1