-12-9k=20-13k

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Solution for -12-9k=20-13k equation: 



-12-9k=20-13k

We move all terms to the left:

-12-9k-(20-13k)=0

We add all the numbers together, and all the variables

-9k-(-13k+20)-12=0

We get rid of parentheses

-9k+13k-20-12=0

We add all the numbers together, and all the variables

4k-32=0

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

4k=32

k=32/4

k=8

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