7n-15+n=20n-80-4n

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Solution for 7n-15+n=20n-80-4n equation: 


Simplifying
7n + -15 + n = 20n + -80 + -4n

Reorder the terms:
-15 + 7n + n = 20n + -80 + -4n

Combine like terms: 7n + n = 8n
-15 + 8n = 20n + -80 + -4n

Reorder the terms:
-15 + 8n = -80 + 20n + -4n

Combine like terms: 20n + -4n = 16n
-15 + 8n = -80 + 16n

Solving
-15 + 8n = -80 + 16n

Solving for variable 'n'.

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

Add '-16n' to each side of the equation.
-15 + 8n + -16n = -80 + 16n + -16n

Combine like terms: 8n + -16n = -8n
-15 + -8n = -80 + 16n + -16n

Combine like terms: 16n + -16n = 0
-15 + -8n = -80 + 0
-15 + -8n = -80

Add '15' to each side of the equation.
-15 + 15 + -8n = -80 + 15

Combine like terms: -15 + 15 = 0
0 + -8n = -80 + 15
-8n = -80 + 15

Combine like terms: -80 + 15 = -65
-8n = -65

Divide each side by '-8'.
n = 8.125

Simplifying
n = 8.125

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