2/5+3/10=7/n

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Solution for 2/5+3/10=7/n equation: 



2/5+3/10=7/n

We move all terms to the left:

2/5+3/10-(7/n)=0



Domain of the equation: n)!=0

n!=0/1

n!=0

n∈R



We add all the numbers together, and all the variables

-(+7/n)+2/5+3/10=0

We get rid of parentheses

-7/n+2/5+3/10=0

We calculate fractions

There is no solution for this equation

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