Mathematics, 22.04.2020 23:12, MzThixkumz

Karla spent 9/2 hours of her time for preparing the exam and 5/2 hours on homework per day. If she sleeps 7 hours per day, how many spare hours does she have?

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Karla spent 9/2 hours of her time for preparing the exam and 5/2 hours on homework per day. If she s...