-9k+8=-7k

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Solution for -9k+8=-7k equation: 



-9k+8=-7k

We move all terms to the left:

-9k+8-(-7k)=0

We get rid of parentheses

-9k+7k+8=0

We add all the numbers together, and all the variables

-2k+8=0

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

-2k=-8

k=-8/-2

k=+4

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