-7n-21=-49

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Solution for -7n-21=-49 equation: 



-7n-21=-49

We move all terms to the left:

-7n-21-(-49)=0

We add all the numbers together, and all the variables

-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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