# math

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1 4/5 x 1 1/3 x 1 3/4=720/48

then I get 15 not sure it that is correct?

• math -

1 4/5 = 9/5
1 1/3 = 4/3
1 3/4 = 7/4
multiply it all together and you have

9/5 * 4/3 * 7/4 = 9*4*7 / 5*3*4

9 i 3*3, so you can cancel out 3*4 in both top and bottom, leaving you with

3*7 / 5 = 21/5

How ever did you get 15?

• math -

good question? I just did it again and came up with the answer you did.

Thank you Steve

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