-7=5k+4k

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Solution for -7=5k+4k equation: 



-7=5k+4k

We move all terms to the left:

-7-(5k+4k)=0

We add all the numbers together, and all the variables

-(+9k)-7=0

We get rid of parentheses

-9k-7=0

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

-9k=7

k=7/-9

k=-7/9

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