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5k-7=2.5
We move all terms to the left:
5k-7-(2.5)=0
We add all the numbers together, and all the variables
5k-9.5=0
We move all terms containing k to the left, all other terms to the right
5k=9.5
k=9.5/5
k=1+3/3.3333333333333
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