Compare 9/4 and 21/45
1st number: 2 1/4, 2nd number: 21/45
9/4 is greater than 21/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
9/4 = 9 × 45/4 × 45 = 405/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
21/45 = 21 × 4/45 × 4 = 84/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 405/180 > 84/180 or 9/4 > 21/45
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