-9+10k=1+8k

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Solution for -9+10k=1+8k equation: 



-9+10k=1+8k

We move all terms to the left:

-9+10k-(1+8k)=0

We add all the numbers together, and all the variables

10k-(8k+1)-9=0

We get rid of parentheses

10k-8k-1-9=0

We add all the numbers together, and all the variables

2k-10=0

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

2k=10

k=10/2

k=5

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