3=4n+7

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Solution for 3=4n+7 equation: 



3=4n+7

We move all terms to the left:

3-(4n+7)=0

We get rid of parentheses

-4n-7+3=0

We add all the numbers together, and all the variables

-4n-4=0

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

-4n=4

n=4/-4

n=-1

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