49=5k+2k

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Solution for 49=5k+2k equation: 



49=5k+2k

We move all terms to the left:

49-(5k+2k)=0

We add all the numbers together, and all the variables

-(+7k)+49=0

We get rid of parentheses

-7k+49=0

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

-7k=-49

k=-49/-7

k=+7

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