7/3z=21

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Solution for 7/3z=21 equation: 



7/3z=21

We move all terms to the left:

7/3z-(21)=0



Domain of the equation: 3z!=0

z!=0/3

z!=0

z∈R



We multiply all the terms by the denominator


-21*3z+7=0

Wy multiply elements

-63z+7=0

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

-63z=-7

z=-7/-63

z=1/9

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