-7.9=3/u-3.1

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Solution for -7.9=3/u-3.1 equation: 



-7.9=3/u-3.1

We move all terms to the left:

-7.9-(3/u-3.1)=0



Domain of the equation: u-3.1)!=0

u∈R



We get rid of parentheses

-3/u+3.1-7.9=0

We multiply all the terms by the denominator


(3.1)*u-(7.9)*u-3=0

We multiply parentheses

3.1u-7.9u-3=0

We add all the numbers together, and all the variables

-4.8u-3=0

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

-4.8u=3

u=3/-4.8

u=-3/4.8

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