3k+9=k-7

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Solution for 3k+9=k-7 equation: 



3k+9=k-7

We move all terms to the left:

3k+9-(k-7)=0

We get rid of parentheses

3k-k+7+9=0

We add all the numbers together, and all the variables

2k+16=0

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

2k=-16

k=-16/2

k=-8

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