Subtract 9/10 from 81/25
1st number: 3 6/25, 2nd number: 9/10
81/25 - 9/10 is 117/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 10 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 25 × 2 = 50,
81/25 = 81 × 2/25 × 2 = 162/50 - Likewise, for the 2nd fraction, since 10 × 5 = 50,
9/10 = 9 × 5/10 × 5 = 45/50 - Subtract the two like fractions:
162/50 - 45/50 = 162 - 45/50 = 117/50 - In mixed form: 217/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/25-18/10 81/50-9/10 81/25-9/20 81/25-27/10 81/75-9/10 81/25-9/30 81/25-45/10 81/25-9/50 81/25-63/10 81/25-9/70