Subtract 63/9 from 81/24
1st number: 3 9/24, 2nd number: 7 0/9
81/24 - 63/9 is -29/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
81/24 = 81 × 3/24 × 3 = 243/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
63/9 = 63 × 8/9 × 8 = 504/72 - Subtract the two like fractions:
243/72 - 504/72 = 243 - 504/72 = -261/72 - After reducing the fraction, the answer is -29/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/48-63/9 81/24-63/18 81/72-63/9 81/24-63/27 81/24-63/45