7n+18=6n+(n-9)

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Solution for 7n+18=6n+(n-9) equation:


Simplifying
7n + 18 = 6n + (n + -9)

Reorder the terms:
18 + 7n = 6n + (n + -9)

Reorder the terms:
18 + 7n = 6n + (-9 + n)

Remove parenthesis around (-9 + n)
18 + 7n = 6n + -9 + n

Reorder the terms:
18 + 7n = -9 + 6n + n

Combine like terms: 6n + n = 7n
18 + 7n = -9 + 7n

Add '-7n' to each side of the equation.
18 + 7n + -7n = -9 + 7n + -7n

Combine like terms: 7n + -7n = 0
18 + 0 = -9 + 7n + -7n
18 = -9 + 7n + -7n

Combine like terms: 7n + -7n = 0
18 = -9 + 0
18 = -9

Solving
18 = -9

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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