20-2k=-20

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Solution for 20-2k=-20 equation: 



20-2k=-20

We move all terms to the left:

20-2k-(-20)=0

We add all the numbers together, and all the variables

-2k+40=0

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

-2k=-40

k=-40/-2

k=+20

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