123=12x-15

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Solution for 123=12x-15 equation:


Simplifying
123 = 12x + -15

Reorder the terms:
123 = -15 + 12x

Solving
123 = -15 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
123 + -12x = -15 + 12x + -12x

Combine like terms: 12x + -12x = 0
123 + -12x = -15 + 0
123 + -12x = -15

Add '-123' to each side of the equation.
123 + -123 + -12x = -15 + -123

Combine like terms: 123 + -123 = 0
0 + -12x = -15 + -123
-12x = -15 + -123

Combine like terms: -15 + -123 = -138
-12x = -138

Divide each side by '-12'.
x = 11.5

Simplifying
x = 11.5

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