Compare 9/21 and 21/80
921 is greater than 2180
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
921 = 9 × 8021 × 80 = 7201680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
2180 = 21 × 2180 × 21 = 4411680 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 7201680 > 4411680 or 921 > 2180
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