90-n=

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Solution for 90-n= equation: 


Simplifying
90 + -1n = 0

Solving
90 + -1n = 0

Solving for variable 'n'.

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

Add '-90' to each side of the equation.
90 + -90 + -1n = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -1n = 0 + -90
-1n = 0 + -90

Combine like terms: 0 + -90 = -90
-1n = -90

Divide each side by '-1'.
n = 90

Simplifying
n = 90

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