5n+7n-9=-15

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Solution for 5n+7n-9=-15 equation:


Simplifying
5n + 7n + -9 = -15

Reorder the terms:
-9 + 5n + 7n = -15

Combine like terms: 5n + 7n = 12n
-9 + 12n = -15

Solving
-9 + 12n = -15

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 + 12n = -15 + 9

Combine like terms: -9 + 9 = 0
0 + 12n = -15 + 9
12n = -15 + 9

Combine like terms: -15 + 9 = -6
12n = -6

Divide each side by '12'.
n = -0.5

Simplifying
n = -0.5

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