90-n=n

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Solution for 90-n=n equation:


Simplifying
90 + -1n = n

Solving
90 + -1n = 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.
90 + -1n + -1n = n + -1n

Combine like terms: -1n + -1n = -2n
90 + -2n = n + -1n

Combine like terms: n + -1n = 0
90 + -2n = 0

Add '-90' to each side of the equation.
90 + -90 + -2n = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -2n = 0 + -90
-2n = 0 + -90

Combine like terms: 0 + -90 = -90
-2n = -90

Divide each side by '-2'.
n = 45

Simplifying
n = 45

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