3n-3=2n-21

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Solution for 3n-3=2n-21 equation: 



3n-3=2n-21

We move all terms to the left:

3n-3-(2n-21)=0

We get rid of parentheses

3n-2n+21-3=0

We add all the numbers together, and all the variables

n+18=0

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

n=-18

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