3n+9-2n=6-2n+12

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Solution for 3n+9-2n=6-2n+12 equation:


Simplifying
3n + 9 + -2n = 6 + -2n + 12

Reorder the terms:
9 + 3n + -2n = 6 + -2n + 12

Combine like terms: 3n + -2n = 1n
9 + 1n = 6 + -2n + 12

Reorder the terms:
9 + 1n = 6 + 12 + -2n

Combine like terms: 6 + 12 = 18
9 + 1n = 18 + -2n

Solving
9 + 1n = 18 + -2n

Solving for variable 'n'.

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

Add '2n' to each side of the equation.
9 + 1n + 2n = 18 + -2n + 2n

Combine like terms: 1n + 2n = 3n
9 + 3n = 18 + -2n + 2n

Combine like terms: -2n + 2n = 0
9 + 3n = 18 + 0
9 + 3n = 18

Add '-9' to each side of the equation.
9 + -9 + 3n = 18 + -9

Combine like terms: 9 + -9 = 0
0 + 3n = 18 + -9
3n = 18 + -9

Combine like terms: 18 + -9 = 9
3n = 9

Divide each side by '3'.
n = 3

Simplifying
n = 3

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