9-n-n=-13

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


Simplifying
9 + -1n + -1n = -13

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

Solving
9 + -2n = -13

Solving for variable 'n'.

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

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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