3n+21+7n=-29

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Solution for 3n+21+7n=-29 equation: 



3n+21+7n=-29

We move all terms to the left:

3n+21+7n-(-29)=0

We add all the numbers together, and all the variables

10n+50=0

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

10n=-50

n=-50/10

n=-5

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