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2007-03-29 13:44:09 · 2 answers · asked by Nicole F 2 in Science & Mathematics Mathematics

2 answers

Easy!

Convert the numbers to vulgar fractions (or improper fractions) and then to DIVIDE by a fraction, turn it upside down and multiply

(like - to divide by 2 is the same as times by 1/2)

So...

7 1/5 divided by 8/15 is

= 36/5 X 15/8

cancel cancel

= 9/1 X 3/2

= 27/2

Convert back to a mixed number

13 and a half

2007-03-29 13:51:16 · answer #1 · answered by Orinoco 7 · 0 0

Divided by 8/15ths means multiplied by 15/8.

7 1/5 = (7*5+1)/5 = 36/5

36/5 * 15/8 = (36 * 15)/(8 *5)

You can cancel a 5 and a 4, so that equals (9*3)/2 = 27/2 = 13 1/2

2007-03-30 02:50:58 · answer #2 · answered by Curt Monash 7 · 0 0

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