Compare 70/18 and 80/15
1st number: 3 16/18, 2nd number: 5 5/15
70/18 is smaller than 80/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
70/18 = 70 × 5/18 × 5 = 350/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
80/15 = 80 × 6/15 × 6 = 480/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 350/90 < 480/90 or 70/18 < 80/15
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