21/5x=4

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Solution for 21/5x=4 equation: 



21/5x=4

We move all terms to the left:

21/5x-(4)=0



Domain of the equation: 5x!=0

x!=0/5

x!=0

x∈R



We multiply all the terms by the denominator


-4*5x+21=0

Wy multiply elements

-20x+21=0

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

-20x=-21

x=-21/-20

x=1+1/20

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