6x+9+6x=-135

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Solution for 6x+9+6x=-135 equation:


Simplifying
6x + 9 + 6x = -135

Reorder the terms:
9 + 6x + 6x = -135

Combine like terms: 6x + 6x = 12x
9 + 12x = -135

Solving
9 + 12x = -135

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 12x = -135 + -9

Combine like terms: 9 + -9 = 0
0 + 12x = -135 + -9
12x = -135 + -9

Combine like terms: -135 + -9 = -144
12x = -144

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

Simplifying
x = -12

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