30k+80=20k=100

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Solution for 30k+80=20k=100 equation: 



30k+80=20k=100

We move all terms to the left:

30k+80-(20k)=0

We add all the numbers together, and all the variables

10k+80=0

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

10k=-80

k=-80/10

k=-8

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