Compare 15/20 and 30/75
15/20 is greater than 30/75
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 20 × 15 = 300,
15/20 = 15 × 15/20 × 15 = 225/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
30/75 = 30 × 4/75 × 4 = 120/300 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 225/300 > 120/300 or 15/20 > 30/75
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