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2014-10-01T07:35:13+05:30

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To know which is greater, first make their denominators equal.
1. 1/2 or 3/5
   LCM of 2 and 5 = 2X5 = 10
    \frac{1}{2} = (1×5)/(2×5) =  \frac{5}{10}
    \frac{3}{5} = (3×2)/(5×2) =  \frac{6}{10}
  Now as the denominator are equal, the fraction whose numerator is greater is   the greater number. So 3/5>1/2

2.Similarly LCM of 7 and 2 =14
   5/7 = 10/14 and 1/2 = 7/14, So 5/7 is greater as 10>7.
3.LCM of 9 and 10 = 90
   8/10 = 72/90 and 7/9 = 70/90, so 8/10 > 7/9
4.LCM of 6 and 7 = 42
   5/6 = 35/42, 6/7 = 36/42. So 6/7 > 5/6
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2014-10-01T07:39:26+05:30
1/2=5/10 and 3/5=6/10.,so 3/5>1/2.
5/7 = 10/14 and 1/2 = 7/14, So 5/7 > 1/2.
 8/10 = 72/90 and 7/9 = 70/90, so 8/10 > 7/9.
 5/6 = 35/42 and 6/7 = 36/42. So 6/7 > 5/6.
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