Subtract 50/9 from 42/5
1st number: 8 2/5, 2nd number: 5 5/9
42/5 - 50/9 is 128/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
42/5 = 42 × 9/5 × 9 = 378/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
50/9 = 50 × 5/9 × 5 = 250/45 - Subtract the two like fractions:
378/45 - 250/45 = 378 - 250/45 = 128/45 - In mixed form: 238/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-50/9 42/10-50/9 42/5-50/18 42/15-50/9 42/5-50/27 42/25-50/9 42/5-50/45 42/35-50/9 42/5-50/63