7n+8=21

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Solution for 7n+8=21 equation: 



7n+8=21

We move all terms to the left:

7n+8-(21)=0

We add all the numbers together, and all the variables

7n-13=0

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

7n=13

n=13/7

n=1+6/7

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