Compare 9/40 and 4/42
9/40 is greater than 4/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
9/40 = 9 × 21/40 × 21 = 189/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
4/42 = 4 × 20/42 × 20 = 80/840 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/840 > 80/840 or 9/40 > 4/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40 and 4/42 9/40 and 8/42 9/80 and 4/42 9/40 and 4/84 27/40 and 4/42 9/40 and 12/42 45/40 and 4/42 9/40 and 20/42 63/40 and 4/42 9/40 and 28/42