9k+7=10k-1

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Solution for 9k+7=10k-1 equation: 



9k+7=10k-1

We move all terms to the left:

9k+7-(10k-1)=0

We get rid of parentheses

9k-10k+1+7=0

We add all the numbers together, and all the variables

-1k+8=0

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

-k=-8

k=-8/-1

k=+8

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