n+4n=90

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Solution for n+4n=90 equation: 


Simplifying
n + 4n = 90

Combine like terms: n + 4n = 5n
5n = 90

Solving
5n = 90

Solving for variable 'n'.

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

Divide each side by '5'.
n = 18

Simplifying
n = 18

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