7(k-1)-2(k+1)=6

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Solution for 7(k-1)-2(k+1)=6 equation: 



7(k-1)-2(k+1)=6

We move all terms to the left:

7(k-1)-2(k+1)-(6)=0

We multiply parentheses

7k-2k-7-2-6=0

We add all the numbers together, and all the variables

5k-15=0

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

5k=15

k=15/5

k=3

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