30+n=3+6

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Solution for 30+n=3+6 equation: 



30+n=3+6

We move all terms to the left:

30+n-(3+6)=0

We add all the numbers together, and all the variables

n+30-9=0

We add all the numbers together, and all the variables

n+21=0

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

n=-21

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