n-3+9n=7n-9

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Solution for n-3+9n=7n-9 equation:


Simplifying
n + -3 + 9n = 7n + -9

Reorder the terms:
-3 + n + 9n = 7n + -9

Combine like terms: n + 9n = 10n
-3 + 10n = 7n + -9

Reorder the terms:
-3 + 10n = -9 + 7n

Solving
-3 + 10n = -9 + 7n

Solving for variable 'n'.

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

Add '-7n' to each side of the equation.
-3 + 10n + -7n = -9 + 7n + -7n

Combine like terms: 10n + -7n = 3n
-3 + 3n = -9 + 7n + -7n

Combine like terms: 7n + -7n = 0
-3 + 3n = -9 + 0
-3 + 3n = -9

Add '3' to each side of the equation.
-3 + 3 + 3n = -9 + 3

Combine like terms: -3 + 3 = 0
0 + 3n = -9 + 3
3n = -9 + 3

Combine like terms: -9 + 3 = -6
3n = -6

Divide each side by '3'.
n = -2

Simplifying
n = -2

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