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10k-8=8k+20
We move all terms to the left:
10k-8-(8k+20)=0
We get rid of parentheses
10k-8k-20-8=0
We add all the numbers together, and all the variables
2k-28=0
We move all terms containing k to the left, all other terms to the right
2k=28
k=28/2
k=14
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