21/j=4

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Solution for 21/j=4 equation: 



21/j=4

We move all terms to the left:

21/j-(4)=0



Domain of the equation: j!=0

j∈R



We multiply all the terms by the denominator


-4*j+21=0

We add all the numbers together, and all the variables

-4j+21=0

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

-4j=-21

j=-21/-4

j=5+1/4

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