20=4/9u

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Solution for 20=4/9u equation: 



20=4/9u

We move all terms to the left:

20-(4/9u)=0



Domain of the equation: 9u)!=0

u!=0/1

u!=0

u∈R



We add all the numbers together, and all the variables

-(+4/9u)+20=0

We get rid of parentheses

-4/9u+20=0

We multiply all the terms by the denominator


20*9u-4=0

Wy multiply elements

180u-4=0

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

180u=4

u=4/180

u=1/45

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