Compare 30/45 and 40/84
30/45 is greater than 40/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
30/45 = 30 × 28/45 × 28 = 840/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
40/84 = 40 × 15/84 × 15 = 600/1260 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 840/1260 > 600/1260 or 30/45 > 40/84
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