Compare 42/90 and 15/64
42/90 is greater than 15/64
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 64 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 90 × 32 = 2880,
42/90 = 42 × 32/90 × 32 = 1344/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
15/64 = 15 × 45/64 × 45 = 675/2880 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1344/2880 > 675/2880 or 42/90 > 15/64
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 15/64 42/90 and 30/64 42/90 and 45/64 42/90 and 75/64