Subtract 75/7 from 10/20
1st number: 10/20, 2nd number: 10 5/7
10/20 - 75/7 is -143/14.
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,
10/20 = 10 × 7/20 × 7 = 70/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
75/7 = 75 × 20/7 × 20 = 1500/140 - Subtract the two like fractions:
70/140 - 1500/140 = 70 - 1500/140 = -1430/140 - After reducing the fraction, the answer is -143/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40-75/7 10/20-75/14 30/20-75/7 10/60-75/7 10/20-75/21 50/20-75/7 10/20-75/35 70/20-75/7 10/20-75/49