7(n=+4)=21

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Solution for 7(n=+4)=21 equation: 



7(n=+4)=21

We move all terms to the left:

7(n-(+4))=0

We add all the numbers together, and all the variables

7(n-4)=0

We multiply parentheses

7n-28=0

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

7n=28

n=28/7

n=4

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