Compare 30/35 and 7/21
30/35 is greater than 7/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
30/35 = 30 × 3/35 × 3 = 90/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
7/21 = 7 × 5/21 × 5 = 35/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/105 > 35/105 or 30/35 > 7/21
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