Compare 42/84 and 28/80
42/84 is greater than 28/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
42/84 = 42 × 20/84 × 20 = 840/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
28/80 = 28 × 21/80 × 21 = 588/1680 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 840/1680 > 588/1680 or 42/84 > 28/80
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