Subtract 81/8 from 35/40
1st number: 35/40, 2nd number: 10 1/8
35/40 - 81/8 is -37/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
35/40 = 35 × 1/40 × 1 = 35/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
81/8 = 81 × 5/8 × 5 = 405/40 - Subtract the two like fractions:
35/40 - 405/40 = 35 - 405/40 = -370/40 - After reducing the fraction, the answer is -37/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40-81/8 35/80-81/8 35/40-81/16 35/40-81/24 35/40-81/40 35/40-81/56