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2+5.3k=11.1
We move all terms to the left:
2+5.3k-(11.1)=0
We add all the numbers together, and all the variables
5.3k-9.1=0
We move all terms containing k to the left, all other terms to the right
5.3k=9.1
k=9.1/5.3
k=1+2.11111111111/2.94444444444
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