Compare 21/56 and 2/90
21/56 is greater than 2/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
21/56 = 21 × 45/56 × 45 = 945/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
2/90 = 2 × 28/90 × 28 = 56/2520 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 945/2520 > 56/2520 or 21/56 > 2/90
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