-1+4k=8k-9

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Solution for -1+4k=8k-9 equation: 



-1+4k=8k-9

We move all terms to the left:

-1+4k-(8k-9)=0

We get rid of parentheses

4k-8k+9-1=0

We add all the numbers together, and all the variables

-4k+8=0

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

-4k=-8

k=-8/-4

k=+2

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