7n=9-n-20

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Solution for 7n=9-n-20 equation:


Simplifying
7n = 9 + -1n + -20

Reorder the terms:
7n = 9 + -20 + -1n

Combine like terms: 9 + -20 = -11
7n = -11 + -1n

Solving
7n = -11 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
7n + n = -11 + -1n + n

Combine like terms: 7n + n = 8n
8n = -11 + -1n + n

Combine like terms: -1n + n = 0
8n = -11 + 0
8n = -11

Divide each side by '8'.
n = -1.375

Simplifying
n = -1.375

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