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17 November, 19:53

What is 1/10 + 1/4 + 1/5+2/15? A. 41/60 B 6/41 C 11/12 D 1/7

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  1. 17 November, 20:01
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    An easy common denominator is 60 bc 15*4=60 and everything else can equal 60 too so:

    6/60 + 15/60 + 12/60 + 8/60 = 41/60 (you only add the numerator numbers) usually you would reduce the end result too but 41 is a prime number so you cant
  2. 17 November, 20:17
    0
    1/10 + 1/4 + 1/5 + 2/15.

    LCM of 10, 4, 5, and 15 = 60

    1/10 = 6/60 1/4 = 15/60 1/5 = 12/60 2/15 = 8/60

    = 6/60 + 15/60 + 12/60 + 4/60 = (6 + 15 + 12 + 8) / 60 = 41/60

    Option A.
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