3(k+7)=21

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Solution for 3(k+7)=21 equation: 



3(k+7)=21

We move all terms to the left:

3(k+7)-(21)=0

We multiply parentheses

3k+21-21=0

We add all the numbers together, and all the variables

3k=0

k=0/3

k=0

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