4/9u=20

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Solution for 4/9u=20 equation: 



4/9u=20

We move all terms to the left:

4/9u-(20)=0



Domain of the equation: 9u!=0

u!=0/9

u!=0

u∈R



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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