Compare 30/16 and 72/21
1st number: 1 14/16, 2nd number: 3 9/21
30/16 is smaller than 72/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
30/16 = 30 × 21/16 × 21 = 630/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
72/21 = 72 × 16/21 × 16 = 1152/336 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 630/336 < 1152/336 or 30/16 < 72/21
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