what is the meaning of this sum? [problem below]

label Mathematics
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Jayce goes out for a walk. He walks backs 5/4 miles from home. He walks back 1/2 mile before meeting up with his friend. write an expression [a sum] that describes this this problem and use a number line. number line: starts at -2 ends at positive 2

Jan 3rd, 2015

You start out at 0, then you go 5/4 forward, then 1/2 back so you have the total distance traveled as d = 5/4 - 1/2 = 3/4.

               

-----------|--|---

-2      0        2

The vertical dashes are at 5/4 and 3/4.

Jan 3rd, 2015

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Jan 3rd, 2015
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