3n+9=3(2n-6)

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


Simplifying
3n + 9 = 3(2n + -6)

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

Reorder the terms:
9 + 3n = 3(-6 + 2n)
9 + 3n = (-6 * 3 + 2n * 3)
9 + 3n = (-18 + 6n)

Solving
9 + 3n = -18 + 6n

Solving for variable 'n'.

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

Add '-6n' to each side of the equation.
9 + 3n + -6n = -18 + 6n + -6n

Combine like terms: 3n + -6n = -3n
9 + -3n = -18 + 6n + -6n

Combine like terms: 6n + -6n = 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 = -27
-3n = -27

Divide each side by '-3'.
n = 9

Simplifying
n = 9

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