Compare 72/80 and 18/20
72/80 is equivalent to 18/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
72/80 = 72 × 1/80 × 1 = 72/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
18/20 = 18 × 4/20 × 4 = 72/80 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 72/80 = 72/80 or 72/80 = 18/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/80 and 36/20 72/80 and 18/40 72/80 and 54/20 72/80 and 18/60 72/80 and 90/20