7k-(k+6)+2k=30

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Solution for 7k-(k+6)+2k=30 equation: 



7k-(k+6)+2k=30

We move all terms to the left:

7k-(k+6)+2k-(30)=0

We add all the numbers together, and all the variables

9k-(k+6)-30=0

We get rid of parentheses

9k-k-6-30=0

We add all the numbers together, and all the variables

8k-36=0

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

8k=36

k=36/8

k=4+1/2

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