-20/u=-4

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Solution for -20/u=-4 equation: 



-20/u=-4

We move all terms to the left:

-20/u-(-4)=0



Domain of the equation: u!=0

u∈R



We add all the numbers together, and all the variables

-20/u+4=0

We multiply all the terms by the denominator


4*u-20=0

We add all the numbers together, and all the variables

4u-20=0

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

4u=20

u=20/4

u=5

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