5n-7n-21=2n=-25

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Solution for 5n-7n-21=2n=-25 equation: 



5n-7n-21=2n=-25

We move all terms to the left:

5n-7n-21-(2n)=0

We add all the numbers together, and all the variables

-4n-21=0

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

-4n=21

n=21/-4

n=-5+1/4

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