-40=7k+2

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Solution for -40=7k+2 equation: 



-40=7k+2

We move all terms to the left:

-40-(7k+2)=0

We get rid of parentheses

-7k-2-40=0

We add all the numbers together, and all the variables

-7k-42=0

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

-7k=42

k=42/-7

k=-6

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