-21-2n=14-9n

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Solution for -21-2n=14-9n equation: 



-21-2n=14-9n

We move all terms to the left:

-21-2n-(14-9n)=0

We add all the numbers together, and all the variables

-2n-(-9n+14)-21=0

We get rid of parentheses

-2n+9n-14-21=0

We add all the numbers together, and all the variables

7n-35=0

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

7n=35

n=35/7

n=5

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