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k/2-7=3
We move all terms to the left:
k/2-7-(3)=0
We add all the numbers together, and all the variables
k/2-10=0
We multiply all the terms by the denominator
k-10*2=0
We add all the numbers together, and all the variables
k-20=0
We move all terms containing k to the left, all other terms to the right
k=20
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