-4=-2/5u

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Solution for -4=-2/5u equation: 



-4=-2/5u

We move all terms to the left:

-4-(-2/5u)=0



Domain of the equation: 5u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

2/5u-4=0

We multiply all the terms by the denominator


-4*5u+2=0

Wy multiply elements

-20u+2=0

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

-20u=-2

u=-2/-20

u=1/10

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