3n-18=5n+21

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Solution for 3n-18=5n+21 equation: 



3n-18=5n+21

We move all terms to the left:

3n-18-(5n+21)=0

We get rid of parentheses

3n-5n-21-18=0

We add all the numbers together, and all the variables

-2n-39=0

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

-2n=39

n=39/-2

n=-19+1/2

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