7+3n=20

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Solution for 7+3n=20 equation: 



7+3n=20

We move all terms to the left:

7+3n-(20)=0

We add all the numbers together, and all the variables

3n-13=0

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

3n=13

n=13/3

n=4+1/3

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