Compare 28/63 and 21/70
28/63 is greater than 21/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
28/63 = 28 × 10/63 × 10 = 280/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 280/630 > 189/630 or 28/63 > 21/70
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