Compare 21/42 and 2/28
21/42 is greater than 2/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
21/42 = 21 × 2/42 × 2 = 42/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
2/28 = 2 × 3/28 × 3 = 6/84 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/84 > 6/84 or 21/42 > 2/28
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