3x-12=123

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Solution for 3x-12=123 equation: 


Simplifying
3x + -12 = 123

Reorder the terms:
-12 + 3x = 123

Solving
-12 + 3x = 123

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 3x = 123 + 12

Combine like terms: -12 + 12 = 0
0 + 3x = 123 + 12
3x = 123 + 12

Combine like terms: 123 + 12 = 135
3x = 135

Divide each side by '3'.
x = 45

Simplifying
x = 45

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