Subtract 54/7 from 81/32
1st number: 2 17/32, 2nd number: 7 5/7
81/32 - 54/7 is -1161/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 7 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 32 × 7 = 224,
81/32 = 81 × 7/32 × 7 = 567/224 - Likewise, for the 2nd fraction, since 7 × 32 = 224,
54/7 = 54 × 32/7 × 32 = 1728/224 - Subtract the two like fractions:
567/224 - 1728/224 = 567 - 1728/224 = -1161/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/64-54/7 81/32-54/14 81/96-54/7 81/32-54/21 81/32-54/35 81/32-54/49