4=-2/7u

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Solution for 4=-2/7u equation: 



4=-2/7u

We move all terms to the left:

4-(-2/7u)=0



Domain of the equation: 7u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

2/7u+4=0

We multiply all the terms by the denominator


4*7u+2=0

Wy multiply elements

28u+2=0

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

28u=-2

u=-2/28

u=-1/14

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