Answers

Compare 21/18 and 48/40

1^st number: 1 3/18, 2^nd number: 1 8/40

21/18 is smaller than 48/40

Steps for comparing fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 40 is 360
2. For the 1st fraction, since 18 × 20 = 360,
   21/18 = 21 × 20/18 × 20 = 420/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   48/40 = 48 × 9/40 × 9 = 432/360
4. Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
5. 420/360 < 432/360 or 21/18 < 48/40

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