Compare 12/45 and 8/42
12/45 is greater than 8/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
12/45 = 12 × 14/45 × 14 = 168/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
8/42 = 8 × 15/42 × 15 = 120/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 168/630 > 120/630 or 12/45 > 8/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45 and 8/42 12/45 and 16/42 12/90 and 8/42 12/45 and 8/84 36/45 and 8/42 12/45 and 24/42 60/45 and 8/42 12/45 and 40/42 84/45 and 8/42 12/45 and 56/42