Compare 18/72 and 12/90
18/72 is greater than 12/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
12/90 = 12 × 4/90 × 4 = 48/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 90/360 > 48/360 or 18/72 > 12/90
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