Compare 42/90 and 3/4
42/90 is smaller than 3/4
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
3/4 = 3 × 45/4 × 45 = 135/180 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/180 < 135/180 or 42/90 < 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90 and 3/4 42/90 and 6/4 42/90 and 3/8 42/90 and 9/4 42/90 and 3/12 42/90 and 15/4 42/90 and 3/20 42/90 and 21/4 42/90 and 3/28