Subtract 49/21 from 63/28
1st number: 2 7/28, 2nd number: 2 7/21
63/28 - 49/21 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
63/28 = 63 × 3/28 × 3 = 189/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
49/21 = 49 × 4/21 × 4 = 196/84 - Subtract the two like fractions:
189/84 - 196/84 = 189 - 196/84 = -7/84 - After reducing the fraction, the answer is -1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/28-98/21 63/56-49/21 63/28-49/42 63/84-49/21 63/28-49/63