2(k-1)=6

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



2(k-1)=6

We move all terms to the left:

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

We multiply parentheses

2k-2-6=0

We add all the numbers together, and all the variables

2k-8=0

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

2k=8

k=8/2

k=4

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