12=7+7k

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Solution for 12=7+7k equation: 



12=7+7k

We move all terms to the left:

12-(7+7k)=0

We add all the numbers together, and all the variables

-(7k+7)+12=0

We get rid of parentheses

-7k-7+12=0

We add all the numbers together, and all the variables

-7k+5=0

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

-7k=-5

k=-5/-7

k=5/7

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