12x-9+2x-x=-87

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Solution for 12x-9+2x-x=-87 equation:


Simplifying
12x + -9 + 2x + -1x = -87

Reorder the terms:
-9 + 12x + 2x + -1x = -87

Combine like terms: 12x + 2x = 14x
-9 + 14x + -1x = -87

Combine like terms: 14x + -1x = 13x
-9 + 13x = -87

Solving
-9 + 13x = -87

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 + 13x = -87 + 9

Combine like terms: -9 + 9 = 0
0 + 13x = -87 + 9
13x = -87 + 9

Combine like terms: -87 + 9 = -78
13x = -78

Divide each side by '13'.
x = -6

Simplifying
x = -6

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