3=-2/5n+7

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Solution for 3=-2/5n+7 equation: 



3=-2/5n+7

We move all terms to the left:

3-(-2/5n+7)=0



Domain of the equation: 5n+7)!=0

n∈R



We get rid of parentheses

2/5n-7+3=0

We multiply all the terms by the denominator


-7*5n+3*5n+2=0

Wy multiply elements

-35n+15n+2=0

We add all the numbers together, and all the variables

-20n+2=0

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

-20n=-2

n=-2/-20

n=1/10

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