Compare 21/63 and 4/80
21/63 is greater than 4/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 63 × 80 = 5040,
21/63 = 21 × 80/63 × 80 = 1680/5040 - Likewise, for the 2nd fraction, since 80 × 63 = 5040,
4/80 = 4 × 63/80 × 63 = 252/5040 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1680/5040 > 252/5040 or 21/63 > 4/80
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