Subtract 15/9 from 63/72
1st number: 63/72, 2nd number: 1 6/9
63/72 - 15/9 is -19/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
63/72 = 63 × 1/72 × 1 = 63/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
15/9 = 15 × 8/9 × 8 = 120/72 - Subtract the two like fractions:
63/72 - 120/72 = 63 - 120/72 = -57/72 - After reducing the fraction, the answer is -19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/72-30/9 63/72-15/18 63/72-45/9 63/72-15/27 63/72-75/9 63/72-15/45 63/72-15/63