Compare 21/14 and 90/72
1st number: 1 7/14, 2nd number: 1 18/72
21/14 is greater than 90/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 14 × 36 = 504,
21/14 = 21 × 36/14 × 36 = 756/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 756/504 > 630/504 or 21/14 > 90/72
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