Compare 18/20 and 54/72
18/20 is greater than 54/72
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
18/20 = 18 × 18/20 × 18 = 324/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
54/72 = 54 × 5/72 × 5 = 270/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 324/360 > 270/360 or 18/20 > 54/72
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