Compare 30/90 and 80/84
30/90 is smaller than 80/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
30/90 = 30 × 14/90 × 14 = 420/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
80/84 = 80 × 15/84 × 15 = 1200/1260 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/1260 < 1200/1260 or 30/90 < 80/84
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