Subtract 63/7 from 7/15
1st number: 7/15, 2nd number: 9 0/7
7/15 - 63/7 is -128/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
7/15 = 7 × 7/15 × 7 = 49/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
63/7 = 63 × 15/7 × 15 = 945/105 - Subtract the two like fractions:
49/105 - 945/105 = 49 - 945/105 = -896/105 - After reducing the fraction, the answer is -128/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15-63/7 7/30-63/7 7/15-63/14 21/15-63/7 7/45-63/7 7/15-63/21 35/15-63/7 7/75-63/7 7/15-63/35 49/15-63/7 7/15-63/49