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1.1k-1.8=7.8
We move all terms to the left:
1.1k-1.8-(7.8)=0
We add all the numbers together, and all the variables
1.1k-9.6=0
We move all terms containing k to the left, all other terms to the right
1.1k=9.6
k=9.6/1.1
k=8+0.8/1.1
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