11n-9n=20

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Solution for 11n-9n=20 equation: 


Simplifying
11n + -9n = 20

Combine like terms: 11n + -9n = 2n
2n = 20

Solving
2n = 20

Solving for variable 'n'.

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

Divide each side by '2'.
n = 10

Simplifying
n = 10

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