4-12=n-15

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Solution for 4-12=n-15 equation: 


Simplifying
4 + -12 = n + -15

Combine like terms: 4 + -12 = -8
-8 = n + -15

Reorder the terms:
-8 = -15 + n

Solving
-8 = -15 + 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.
-8 + -1n = -15 + n + -1n

Combine like terms: n + -1n = 0
-8 + -1n = -15 + 0
-8 + -1n = -15

Add '8' to each side of the equation.
-8 + 8 + -1n = -15 + 8

Combine like terms: -8 + 8 = 0
0 + -1n = -15 + 8
-1n = -15 + 8

Combine like terms: -15 + 8 = -7
-1n = -7

Divide each side by '-1'.
n = 7

Simplifying
n = 7

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