12-15=n+7

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Solution for 12-15=n+7 equation:


Simplifying
12 + -15 = n + 7

Combine like terms: 12 + -15 = -3
-3 = n + 7

Reorder the terms:
-3 = 7 + n

Solving
-3 = 7 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
-3 + -1n = 7 + n + -1n

Combine like terms: n + -1n = 0
-3 + -1n = 7 + 0
-3 + -1n = 7

Add '3' to each side of the equation.
-3 + 3 + -1n = 7 + 3

Combine like terms: -3 + 3 = 0
0 + -1n = 7 + 3
-1n = 7 + 3

Combine like terms: 7 + 3 = 10
-1n = 10

Divide each side by '-1'.
n = -10

Simplifying
n = -10

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