-3=k*7

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Solution for -3=k*7 equation: 



-3=k*7

We move all terms to the left:

-3-(k*7)=0

We add all the numbers together, and all the variables

-(+k*7)-3=0

We get rid of parentheses

-k*7-3=0

Wy multiply elements

-7k-3=0

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

-7k=3

k=3/-7

k=-3/7

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