Subtract 63/20 from 49/28
1st number: 1 21/28, 2nd number: 3 3/20
49/28 - 63/20 is -7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
49/28 = 49 × 5/28 × 5 = 245/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
63/20 = 63 × 7/20 × 7 = 441/140 - Subtract the two like fractions:
245/140 - 441/140 = 245 - 441/140 = -196/140 - After reducing the fraction, the answer is -7/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/28-63/20 49/56-63/20 49/28-63/40 49/84-63/20 49/28-63/60