3n-15=7n+n

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


Simplifying
3n + -15 = 7n + n

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

Combine like terms: 7n + n = 8n
-15 + 3n = 8n

Solving
-15 + 3n = 8n

Solving for variable 'n'.

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

Add '-8n' to each side of the equation.
-15 + 3n + -8n = 8n + -8n

Combine like terms: 3n + -8n = -5n
-15 + -5n = 8n + -8n

Combine like terms: 8n + -8n = 0
-15 + -5n = 0

Add '15' to each side of the equation.
-15 + 15 + -5n = 0 + 15

Combine like terms: -15 + 15 = 0
0 + -5n = 0 + 15
-5n = 0 + 15

Combine like terms: 0 + 15 = 15
-5n = 15

Divide each side by '-5'.
n = -3

Simplifying
n = -3

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