Compare 21/48 and 30/80
21/48 is greater than 30/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
30/80 = 30 × 3/80 × 3 = 90/240 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 105/240 > 90/240 or 21/48 > 30/80
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