Subtract 63/7 from 3/20
1st number: 3/20, 2nd number: 9 0/7
3/20 - 63/7 is -177/20.
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,
3/20 = 3 × 7/20 × 7 = 21/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
63/7 = 63 × 20/7 × 20 = 1260/140 - Subtract the two like fractions:
21/140 - 1260/140 = 21 - 1260/140 = -1239/140 - After reducing the fraction, the answer is -177/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-63/7 3/40-63/7 3/20-63/14 9/20-63/7 3/60-63/7 3/20-63/21 15/20-63/7 3/20-63/35 21/20-63/7 3/20-63/49