3=k/21-2

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Solution for 3=k/21-2 equation: 



3=k/21-2

We move all terms to the left:

3-(k/21-2)=0

We get rid of parentheses

-k/21+2+3=0

We multiply all the terms by the denominator


-k+2*21+3*21=0

We add all the numbers together, and all the variables

-1k+105=0

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

-k=-105

k=-105/-1

k=+105

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