7-8k=-9-10k

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Solution for 7-8k=-9-10k equation: 



7-8k=-9-10k

We move all terms to the left:

7-8k-(-9-10k)=0

We add all the numbers together, and all the variables

-8k-(-10k-9)+7=0

We get rid of parentheses

-8k+10k+9+7=0

We add all the numbers together, and all the variables

2k+16=0

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

2k=-16

k=-16/2

k=-8

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