Compare 21/80 and 4/63
21/80 is greater than 4/63
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 80 × 63 = 5040,
21/80 = 21 × 63/80 × 63 = 1323/5040 - Likewise, for the 2nd fraction, since 63 × 80 = 5040,
4/63 = 4 × 80/63 × 80 = 320/5040 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1323/5040 > 320/5040 or 21/80 > 4/63
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