-20k-(-18k)=-12

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Solution for -20k-(-18k)=-12 equation: 



-20k-(-18k)=-12

We move all terms to the left:

-20k-(-18k)-(-12)=0

We add all the numbers together, and all the variables

-20k-(-18k)+12=0

We get rid of parentheses

-20k+18k+12=0

We add all the numbers together, and all the variables

-2k+12=0

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

-2k=-12

k=-12/-2

k=+6

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