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2-91.

In parts (a) and (b) of problem 2‑89, the rectangular models for of and of looked different, but the answers were the same. Read the steps for the example given in the Math Notes box in this lesson for how to calculate of . Then follow the steps and draw a similar rectangle to show of . Are the answers the same? Why or why not? Homework Help ✎

For help drawing a diagram, see the online homework help for problem 2-90.

Mathematically, what do we mean when we say 

What operation is being used? Does the order matter for this operation?