Compare 12/28 and 84/90
12/28 is smaller than 84/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
12/28 = 12 × 45/28 × 45 = 540/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
84/90 = 84 × 14/90 × 14 = 1176/1260 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 540/1260 < 1176/1260 or 12/28 < 84/90
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