7n+10+3n=120

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Solution for 7n+10+3n=120 equation: 



7n+10+3n=120

We move all terms to the left:

7n+10+3n-(120)=0

We add all the numbers together, and all the variables

10n-110=0

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

10n=110

n=110/10

n=11

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