Subtract 10/9 from 81/60
1st number: 1 21/60, 2nd number: 1 1/9
81/60 - 10/9 is 43/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
81/60 = 81 × 3/60 × 3 = 243/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
10/9 = 10 × 20/9 × 20 = 200/180 - Subtract the two like fractions:
243/180 - 200/180 = 243 - 200/180 = 43/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/60-20/9 81/60-10/18 81/60-30/9 81/60-10/27 81/60-50/9 81/60-10/45 81/60-70/9 81/60-10/63