Compare 21/50 and 28/72
21/50 is greater than 28/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 50 × 36 = 1800,
21/50 = 21 × 36/50 × 36 = 756/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
28/72 = 28 × 25/72 × 25 = 700/1800 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 756/1800 > 700/1800 or 21/50 > 28/72
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