Subtract 81/24 from 35/72
1st number: 35/72, 2nd number: 3 9/24
35/72 - 81/24 is -26/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
35/72 = 35 × 1/72 × 1 = 35/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
81/24 = 81 × 3/24 × 3 = 243/72 - Subtract the two like fractions:
35/72 - 243/72 = 35 - 243/72 = -208/72 - After reducing the fraction, the answer is -26/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72-81/24 35/72-81/48 35/72-81/72