7n+2n=8n-4

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Solution for 7n+2n=8n-4 equation: 


Simplifying
7n + 2n = 8n + -4

Combine like terms: 7n + 2n = 9n
9n = 8n + -4

Reorder the terms:
9n = -4 + 8n

Solving
9n = -4 + 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.
9n + -8n = -4 + 8n + -8n

Combine like terms: 9n + -8n = 1n
1n = -4 + 8n + -8n

Combine like terms: 8n + -8n = 0
1n = -4 + 0
1n = -4

Divide each side by '1'.
n = -4

Simplifying
n = -4

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