Compare 18/15 and 72/9
1st number: 1 3/15, 2nd number: 8 0/9
18/15 is smaller than 72/9
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
18/15 = 18 × 3/15 × 3 = 54/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
72/9 = 72 × 5/9 × 5 = 360/45 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 54/45 < 360/45 or 18/15 < 72/9
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