21-5n=3

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Solution for 21-5n=3 equation: 



21-5n=3

We move all terms to the left:

21-5n-(3)=0

We add all the numbers together, and all the variables

-5n+18=0

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

-5n=-18

n=-18/-5

n=3+3/5

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