Subtract 80/7 from 50/3
1st number: 16 2/3, 2nd number: 11 3/7
50/3 - 80/7 is 110/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
50/3 = 50 × 7/3 × 7 = 350/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
80/7 = 80 × 3/7 × 3 = 240/21 - Subtract the two like fractions:
350/21 - 240/21 = 350 - 240/21 = 110/21 - In mixed form: 55/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/6-80/7 50/3-80/14 50/9-80/7 50/3-80/21 50/15-80/7 50/3-80/35 50/21-80/7 50/3-80/49