21n=6n-12

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Solution for 21n=6n-12 equation: 



21n=6n-12

We move all terms to the left:

21n-(6n-12)=0

We get rid of parentheses

21n-6n+12=0

We add all the numbers together, and all the variables

15n+12=0

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

15n=-12

n=-12/15

n=-4/5

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