3n-9=13+n

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Solution for 3n-9=13+n equation:


Simplifying
3n + -9 = 13 + n

Reorder the terms:
-9 + 3n = 13 + n

Solving
-9 + 3n = 13 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
-9 + 3n + -1n = 13 + n + -1n

Combine like terms: 3n + -1n = 2n
-9 + 2n = 13 + n + -1n

Combine like terms: n + -1n = 0
-9 + 2n = 13 + 0
-9 + 2n = 13

Add '9' to each side of the equation.
-9 + 9 + 2n = 13 + 9

Combine like terms: -9 + 9 = 0
0 + 2n = 13 + 9
2n = 13 + 9

Combine like terms: 13 + 9 = 22
2n = 22

Divide each side by '2'.
n = 11

Simplifying
n = 11

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