Compare 18/25 and 7/21
18/25 is greater than 7/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
18/25 = 18 × 21/25 × 21 = 378/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
7/21 = 7 × 25/21 × 25 = 175/525 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 378/525 > 175/525 or 18/25 > 7/21
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