3n=5n-40

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Solution for 3n=5n-40 equation: 



3n=5n-40

We move all terms to the left:

3n-(5n-40)=0

We get rid of parentheses

3n-5n+40=0

We add all the numbers together, and all the variables

-2n+40=0

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

-2n=-40

n=-40/-2

n=+20

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