8n-(-3n+4)=21

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Solution for 8n-(-3n+4)=21 equation: 



8n-(-3n+4)=21

We move all terms to the left:

8n-(-3n+4)-(21)=0

We get rid of parentheses

8n+3n-4-21=0

We add all the numbers together, and all the variables

11n-25=0

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

11n=25

n=25/11

n=2+3/11

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