Subtract 81/10 from 36/28
1st number: 1 8/28, 2nd number: 8 1/10
36/28 - 81/10 is -477/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
36/28 = 36 × 5/28 × 5 = 180/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
81/10 = 81 × 14/10 × 14 = 1134/140 - Subtract the two like fractions:
180/140 - 1134/140 = 180 - 1134/140 = -954/140 - After reducing the fraction, the answer is -477/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28-81/10 36/56-81/10 36/28-81/20 36/84-81/10 36/28-81/30 36/28-81/50 36/28-81/70