Compare 18/30 and 7/28
18/30 is greater than 7/28
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
18/30 = 18 × 14/30 × 14 = 252/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
7/28 = 7 × 15/28 × 15 = 105/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 252/420 > 105/420 or 18/30 > 7/28
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