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66.75+(49.8-29.57)=k
We move all terms to the left:
66.75+(49.8-29.57)-(k)=0
We add all the numbers together, and all the variables
-k+66.75+(20.23)=0
We add all the numbers together, and all the variables
-1k+86.98=0
We move all terms containing k to the left, all other terms to the right
-k=-86.98
k=-86.98/-1
k=86+0.98/1
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