Compare 4/20 and 7/90
4/20 is greater than 7/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 36/180 > 14/180 or 4/20 > 7/90
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