Subtract 50/7 from 35/21
1st number: 1 14/21, 2nd number: 7 1/7
35/21 - 50/7 is -115/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
35/21 = 35 × 1/21 × 1 = 35/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
50/7 = 50 × 3/7 × 3 = 150/21 - Subtract the two like fractions:
35/21 - 150/21 = 35 - 150/21 = -115/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-50/7 35/42-50/7 35/21-50/14 35/63-50/7 35/21-50/21 35/21-50/35 35/21-50/49