Subtract 56/7 from 9/20
1st number: 9/20, 2nd number: 8 0/7
9/20 - 56/7 is -151/20.
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,
9/20 = 9 × 7/20 × 7 = 63/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
56/7 = 56 × 20/7 × 20 = 1120/140 - Subtract the two like fractions:
63/140 - 1120/140 = 63 - 1120/140 = -1057/140 - After reducing the fraction, the answer is -151/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-56/7 9/40-56/7 9/20-56/14 27/20-56/7 9/60-56/7 9/20-56/21 45/20-56/7 9/20-56/35 63/20-56/7 9/20-56/49