3/4k=21

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Solution for 3/4k=21 equation: 



3/4k=21

We move all terms to the left:

3/4k-(21)=0



Domain of the equation: 4k!=0

k!=0/4

k!=0

k∈R



We multiply all the terms by the denominator


-21*4k+3=0

Wy multiply elements

-84k+3=0

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

-84k=-3

k=-3/-84

k=1/28

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