-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 add all the numbers together, and all the variables

-(+4/7u)-28=0

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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