Compare 12/90 and 21/48
12/90 is smaller than 21/48
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
12/90 = 12 × 8/90 × 8 = 96/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
21/48 = 21 × 15/48 × 15 = 315/720 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 96/720 < 315/720 or 12/90 < 21/48
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