80+n=3n

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Solution for 80+n=3n equation: 



80+n=3n

We move all terms to the left:

80+n-(3n)=0

We add all the numbers together, and all the variables

-2n+80=0

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

-2n=-80

n=-80/-2

n=+40

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