9n+3(n-2)=18

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Solution for 9n+3(n-2)=18 equation:


Simplifying
9n + 3(n + -2) = 18

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

Reorder the terms:
-6 + 9n + 3n = 18

Combine like terms: 9n + 3n = 12n
-6 + 12n = 18

Solving
-6 + 12n = 18

Solving for variable 'n'.

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

Add '6' to each side of the equation.
-6 + 6 + 12n = 18 + 6

Combine like terms: -6 + 6 = 0
0 + 12n = 18 + 6
12n = 18 + 6

Combine like terms: 18 + 6 = 24
12n = 24

Divide each side by '12'.
n = 2

Simplifying
n = 2

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