-3-7(2+6k)=21-4K

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Solution for -3-7(2+6k)=21-4K equation: 



-3-7(2+6k)=21-4

We move all terms to the left:

-3-7(2+6k)-(21-4)=0

We add all the numbers together, and all the variables

-7(6k+2)-3-17=0

We add all the numbers together, and all the variables

-7(6k+2)-20=0

We multiply parentheses

-42k-14-20=0

We add all the numbers together, and all the variables

-42k-34=0

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

-42k=34

k=34/-42

k=-17/21

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