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3+7k=16-3k-3k
We move all terms to the left:
3+7k-(16-3k-3k)=0
We add all the numbers together, and all the variables
7k-(-6k+16)+3=0
We get rid of parentheses
7k+6k-16+3=0
We add all the numbers together, and all the variables
13k-13=0
We move all terms containing k to the left, all other terms to the right
13k=13
k=13/13
k=1
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