6n+3=8n-21

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Solution for 6n+3=8n-21 equation: 



6n+3=8n-21

We move all terms to the left:

6n+3-(8n-21)=0

We get rid of parentheses

6n-8n+21+3=0

We add all the numbers together, and all the variables

-2n+24=0

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

-2n=-24

n=-24/-2

n=+12

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