Compare 16/42 and 21/45
16/42 is smaller than 21/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
16/42 = 16 × 15/42 × 15 = 240/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
21/45 = 21 × 14/45 × 14 = 294/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 240/630 < 294/630 or 16/42 < 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/42 and 21/45 16/42 and 42/45 16/84 and 21/45 16/42 and 21/90 48/42 and 21/45 16/42 and 63/45 80/42 and 21/45