2n+7n=n-12+4

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Solution for 2n+7n=n-12+4 equation: 


Simplifying
2n + 7n = n + -12 + 4

Combine like terms: 2n + 7n = 9n
9n = n + -12 + 4

Reorder the terms:
9n = -12 + 4 + n

Combine like terms: -12 + 4 = -8
9n = -8 + n

Solving
9n = -8 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
9n + -1n = -8 + n + -1n

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

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

Divide each side by '8'.
n = -1

Simplifying
n = -1

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