20+n=9

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Solution for 20+n=9 equation: 


Simplifying
20 + n = 9

Solving
20 + n = 9

Solving for variable 'n'.

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

Add '-20' to each side of the equation.
20 + -20 + n = 9 + -20

Combine like terms: 20 + -20 = 0
0 + n = 9 + -20
n = 9 + -20

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

Simplifying
n = -11

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