12n-9+2n-n=-87

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


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

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

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

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

Solving
-9 + 13n = -87

Solving for variable 'n'.

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

Add '9' to each side of the equation.
-9 + 9 + 13n = -87 + 9

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

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

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

Simplifying
n = -6

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