21/3x=9

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Solution for 21/3x=9 equation: 



21/3x=9

We move all terms to the left:

21/3x-(9)=0



Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R



We multiply all the terms by the denominator


-9*3x+21=0

Wy multiply elements

-27x+21=0

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

-27x=-21

x=-21/-27

x=7/9

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