Compare 42/63 and 45/30
1st number: 42/63, 2nd number: 1 15/30
42/63 is smaller than 45/30
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
45/30 = 45 × 21/30 × 21 = 945/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/630 < 945/630 or 42/63 < 45/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63 and 45/30 42/63 and 90/30 42/63 and 45/60 42/63 and 45/90