3x+120=9x-6

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Solution for 3x+120=9x-6 equation:


Simplifying
3x + 120 = 9x + -6

Reorder the terms:
120 + 3x = 9x + -6

Reorder the terms:
120 + 3x = -6 + 9x

Solving
120 + 3x = -6 + 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.
120 + 3x + -9x = -6 + 9x + -9x

Combine like terms: 3x + -9x = -6x
120 + -6x = -6 + 9x + -9x

Combine like terms: 9x + -9x = 0
120 + -6x = -6 + 0
120 + -6x = -6

Add '-120' to each side of the equation.
120 + -120 + -6x = -6 + -120

Combine like terms: 120 + -120 = 0
0 + -6x = -6 + -120
-6x = -6 + -120

Combine like terms: -6 + -120 = -126
-6x = -126

Divide each side by '-6'.
x = 21

Simplifying
x = 21

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