Compare 21/18 and 36/81
1st number: 1 3/18, 2nd number: 36/81
21/18 is greater than 36/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
21/18 = 21 × 9/18 × 9 = 189/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
36/81 = 36 × 2/81 × 2 = 72/162 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/162 > 72/162 or 21/18 > 36/81
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