Subtract 63/7 from 15/4
1st number: 3 3/4, 2nd number: 9 0/7
15/4 - 63/7 is -21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
15/4 = 15 × 7/4 × 7 = 105/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
63/7 = 63 × 4/7 × 4 = 252/28 - Subtract the two like fractions:
105/28 - 252/28 = 105 - 252/28 = -147/28 - After reducing the fraction, the answer is -21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4-63/7 15/8-63/7 15/4-63/14 45/4-63/7 15/12-63/7 15/4-63/21 75/4-63/7 15/20-63/7 15/4-63/35 15/28-63/7 15/4-63/49