Compare 56/64 and 20/45
56/64 is greater than 20/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 45 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
56/64 = 56 × 45/64 × 45 = 2520/2880 - Likewise, for the 2nd fraction, since 45 × 64 = 2880,
20/45 = 20 × 64/45 × 64 = 1280/2880 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 2520/2880 > 1280/2880 or 56/64 > 20/45
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