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5.4k+6.8(0.8k-5.3)=-85.904
We move all terms to the left:
5.4k+6.8(0.8k-5.3)-(-85.904)=0
We add all the numbers together, and all the variables
5.4k+6.8(0.8k-5.3)+85.904=0
We multiply parentheses
5.4k+0k-36.04+85.904=0
We add all the numbers together, and all the variables
6.4k+49.864=0
We move all terms containing k to the left, all other terms to the right
6.4k=-49.864
k=-49.864/6.4
k=-7+4.75939849624/6.01503759399
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