28=-4/7u

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Solution for 28=-4/7u equation: 



28=-4/7u

We move all terms to the left:

28-(-4/7u)=0



Domain of the equation: 7u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

4/7u+28=0

We multiply all the terms by the denominator


28*7u+4=0

Wy multiply elements

196u+4=0

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

196u=-4

u=-4/196

u=-1/49

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