Compare 6/7 and 21/80
6/7 is greater than 21/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
6/7 = 6 × 80/7 × 80 = 480/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 480/560 > 147/560 or 6/7 > 21/80
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