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-1.3k=-1.21
We move all terms to the left:
-1.3k-(-1.21)=0
We add all the numbers together, and all the variables
-1.3k+1.21=0
We move all terms containing k to the left, all other terms to the right
-1.3k=-1.21
k=-1.21/-1.3
k=1/1.0743801652893
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