Subtract 10/7 from 49/20
1st number: 2 9/20, 2nd number: 1 3/7
49/20 - 10/7 is 143/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
49/20 = 49 × 7/20 × 7 = 343/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
10/7 = 10 × 20/7 × 20 = 200/140 - Subtract the two like fractions:
343/140 - 200/140 = 343 - 200/140 = 143/140 - In mixed form: 13/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/20-10/7 49/20-20/7 49/40-10/7 49/20-10/14 49/20-30/7 49/60-10/7 49/20-10/21 49/20-50/7 49/20-10/35 49/20-70/7 49/20-10/49