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10k-7=2(13-5)
We move all terms to the left:
10k-7-(2(13-5))=0
We add all the numbers together, and all the variables
10k-7-(28)=0
We add all the numbers together, and all the variables
10k-35=0
We move all terms containing k to the left, all other terms to the right
10k=35
k=35/10
k=3+1/2
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