Compare 20/50 and 9/21
20/50 is smaller than 9/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
20/50 = 20 × 21/50 × 21 = 420/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
9/21 = 9 × 50/21 × 50 = 450/1050 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/1050 < 450/1050 or 20/50 < 9/21
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