Compare 80/21 and 9/8
1st number: 3 17/21, 2nd number: 1 1/8
80/21 is greater than 9/8
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
80/21 = 80 × 8/21 × 8 = 640/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
9/8 = 9 × 21/8 × 21 = 189/168 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 640/168 > 189/168 or 80/21 > 9/8
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