3(3k-7)=15

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Solution for 3(3k-7)=15 equation: 



3(3k-7)=15

We move all terms to the left:

3(3k-7)-(15)=0

We multiply parentheses

9k-21-15=0

We add all the numbers together, and all the variables

9k-36=0

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

9k=36

k=36/9

k=4

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