Compare 45/64 and 21/70
45/64 is greater than 21/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 70 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 64 × 35 = 2240,
45/64 = 45 × 35/64 × 35 = 1575/2240 - Likewise, for the 2nd fraction, since 70 × 32 = 2240,
21/70 = 21 × 32/70 × 32 = 672/2240 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1575/2240 > 672/2240 or 45/64 > 21/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/64 and 21/70 45/64 and 42/70 45/64 and 63/70