Compare 21/7 and 18/16
1st number: 3 0/7, 2nd number: 1 2/16
21/7 is greater than 18/16
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 7 × 16 = 112,
21/7 = 21 × 16/7 × 16 = 336/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
18/16 = 18 × 7/16 × 7 = 126/112 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 336/112 > 126/112 or 21/7 > 18/16
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