Subtract 8/9 from 50/21
1st number: 2 8/21, 2nd number: 8/9
50/21 - 8/9 is 94/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
50/21 = 50 × 3/21 × 3 = 150/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
8/9 = 8 × 7/9 × 7 = 56/63 - Subtract the two like fractions:
150/63 - 56/63 = 150 - 56/63 = 94/63 - In mixed form: 131/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-16/9 50/42-8/9 50/21-8/18 50/21-24/9 50/63-8/9 50/21-8/27 50/21-40/9 50/21-8/45 50/21-56/9 50/21-8/63