15-n=3n+7

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Solution for 15-n=3n+7 equation:


Simplifying
15 + -1n = 3n + 7

Reorder the terms:
15 + -1n = 7 + 3n

Solving
15 + -1n = 7 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
15 + -1n + -3n = 7 + 3n + -3n

Combine like terms: -1n + -3n = -4n
15 + -4n = 7 + 3n + -3n

Combine like terms: 3n + -3n = 0
15 + -4n = 7 + 0
15 + -4n = 7

Add '-15' to each side of the equation.
15 + -15 + -4n = 7 + -15

Combine like terms: 15 + -15 = 0
0 + -4n = 7 + -15
-4n = 7 + -15

Combine like terms: 7 + -15 = -8
-4n = -8

Divide each side by '-4'.
n = 2

Simplifying
n = 2

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