Subtract 42/45 from 28/3
1st number: 9 1/3, 2nd number: 42/45
28/3 - 42/45 is 42/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 3 × 15 = 45,
28/3 = 28 × 15/3 × 15 = 420/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
42/45 = 42 × 1/45 × 1 = 42/45 - Subtract the two like fractions:
420/45 - 42/45 = 420 - 42/45 = 378/45 - After reducing the fraction, the answer is 42/5
- In mixed form: 82/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/3-42/45 28/3-84/45 28/6-42/45 28/3-42/90 84/3-42/45 28/9-42/45 28/15-42/45 28/21-42/45