Subtract 9/7 from 2/20
1st number: 2/20, 2nd number: 1 2/7
2/20 - 9/7 is -83/70.
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,
2/20 = 2 × 7/20 × 7 = 14/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
9/7 = 9 × 20/7 × 20 = 180/140 - Subtract the two like fractions:
14/140 - 180/140 = 14 - 180/140 = -166/140 - After reducing the fraction, the answer is -83/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20-9/7 2/20-18/7 2/40-9/7 2/20-9/14 6/20-9/7 2/20-27/7 2/60-9/7 2/20-9/21 10/20-9/7 2/20-45/7 2/20-9/35 14/20-9/7 2/20-63/7 2/20-9/49