3x-126=138-9x

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Solution for 3x-126=138-9x equation:


Simplifying
3x + -126 = 138 + -9x

Reorder the terms:
-126 + 3x = 138 + -9x

Solving
-126 + 3x = 138 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
-126 + 3x + 9x = 138 + -9x + 9x

Combine like terms: 3x + 9x = 12x
-126 + 12x = 138 + -9x + 9x

Combine like terms: -9x + 9x = 0
-126 + 12x = 138 + 0
-126 + 12x = 138

Add '126' to each side of the equation.
-126 + 126 + 12x = 138 + 126

Combine like terms: -126 + 126 = 0
0 + 12x = 138 + 126
12x = 138 + 126

Combine like terms: 138 + 126 = 264
12x = 264

Divide each side by '12'.
x = 22

Simplifying
x = 22

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