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7k-4=3+5
We move all terms to the left:
7k-4-(3+5)=0
We add all the numbers together, and all the variables
7k-4-8=0
We add all the numbers together, and all the variables
7k-12=0
We move all terms containing k to the left, all other terms to the right
7k=12
k=12/7
k=1+5/7
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