19+3n-12+7n=3n-21+2n+63

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Solution for 19+3n-12+7n=3n-21+2n+63 equation: 



19+3n-12+7n=3n-21+2n+63

We move all terms to the left:

19+3n-12+7n-(3n-21+2n+63)=0

We add all the numbers together, and all the variables

3n+7n-(5n+42)+19-12=0

We add all the numbers together, and all the variables

10n-(5n+42)+7=0

We get rid of parentheses

10n-5n-42+7=0

We add all the numbers together, and all the variables

5n-35=0

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

5n=35

n=35/5

n=7

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