3n-5=4n+7

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Solution for 3n-5=4n+7 equation: 



3n-5=4n+7

We move all terms to the left:

3n-5-(4n+7)=0

We get rid of parentheses

3n-4n-7-5=0

We add all the numbers together, and all the variables

-1n-12=0

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

-n=12

n=12/-1

n=-12

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