50k-80=40k+120

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Solution for 50k-80=40k+120 equation: 



50k-80=40k+120

We move all terms to the left:

50k-80-(40k+120)=0

We get rid of parentheses

50k-40k-120-80=0

We add all the numbers together, and all the variables

10k-200=0

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

10k=200

k=200/10

k=20

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