3=72+40n

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Solution for 3=72+40n equation: 



3=72+40n

We move all terms to the left:

3-(72+40n)=0

We add all the numbers together, and all the variables

-(40n+72)+3=0

We get rid of parentheses

-40n-72+3=0

We add all the numbers together, and all the variables

-40n-69=0

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

-40n=69

n=69/-40

n=-1+29/40

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