Compare 20/40 and 9/18
20/40 is equivalent to 9/18
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
9/18 = 9 × 20/18 × 20 = 180/360 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 180/360 = 180/360 or 20/40 = 9/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80 and 9/18 20/40 and 9/36 60/40 and 9/18 20/40 and 27/18 20/40 and 9/54 20/40 and 45/18 20/40 and 9/90 20/40 and 63/18