21+5n=91

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Solution for 21+5n=91 equation: 



21+5n=91

We move all terms to the left:

21+5n-(91)=0

We add all the numbers together, and all the variables

5n-70=0

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

5n=70

n=70/5

n=14

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