Subtract 63/56 from 12/72
1st number: 12/72, 2nd number: 1 7/56
12/72 - 63/56 is -23/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
12/72 = 12 × 7/72 × 7 = 84/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
63/56 = 63 × 9/56 × 9 = 567/504 - Subtract the two like fractions:
84/504 - 567/504 = 84 - 567/504 = -483/504 - After reducing the fraction, the answer is -23/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72-63/56 36/72-63/56 60/72-63/56 84/72-63/56