13n-12=6n+9

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Solution for 13n-12=6n+9 equation:


Simplifying
13n + -12 = 6n + 9

Reorder the terms:
-12 + 13n = 6n + 9

Reorder the terms:
-12 + 13n = 9 + 6n

Solving
-12 + 13n = 9 + 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.
-12 + 13n + -6n = 9 + 6n + -6n

Combine like terms: 13n + -6n = 7n
-12 + 7n = 9 + 6n + -6n

Combine like terms: 6n + -6n = 0
-12 + 7n = 9 + 0
-12 + 7n = 9

Add '12' to each side of the equation.
-12 + 12 + 7n = 9 + 12

Combine like terms: -12 + 12 = 0
0 + 7n = 9 + 12
7n = 9 + 12

Combine like terms: 9 + 12 = 21
7n = 21

Divide each side by '7'.
n = 3

Simplifying
n = 3

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