Answers

Compare 63/90 and 81/84

63/90 is smaller than 81/84

Steps for comparing fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 84 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 90 × 14 = 1260,
   63/90 = 63 × 14/90 × 14 = 882/1260
3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
   81/84 = 81 × 15/84 × 15 = 1215/1260
4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
5. 882/1260 < 1215/1260 or 63/90 < 81/84

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