n+19n=90

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Solution for n+19n=90 equation: 



n+19n=90

We move all terms to the left:

n+19n-(90)=0

We add all the numbers together, and all the variables

20n-90=0

We move all terms containing n to the left, all other terms to the right

20n=90

n=90/20

n=4+1/2

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