1n+81=9n-7

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Solution for 1n+81=9n-7 equation:


Simplifying
1n + 81 = 9n + -7

Reorder the terms:
81 + 1n = 9n + -7

Reorder the terms:
81 + 1n = -7 + 9n

Solving
81 + 1n = -7 + 9n

Solving for variable 'n'.

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

Add '-9n' to each side of the equation.
81 + 1n + -9n = -7 + 9n + -9n

Combine like terms: 1n + -9n = -8n
81 + -8n = -7 + 9n + -9n

Combine like terms: 9n + -9n = 0
81 + -8n = -7 + 0
81 + -8n = -7

Add '-81' to each side of the equation.
81 + -81 + -8n = -7 + -81

Combine like terms: 81 + -81 = 0
0 + -8n = -7 + -81
-8n = -7 + -81

Combine like terms: -7 + -81 = -88
-8n = -88

Divide each side by '-8'.
n = 11

Simplifying
n = 11

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