Subtract 81/21 from 60/6
1st number: 10 0/6, 2nd number: 3 18/21
60/6 - 81/21 is 43/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
60/6 = 60 × 7/6 × 7 = 420/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
81/21 = 81 × 2/21 × 2 = 162/42 - Subtract the two like fractions:
420/42 - 162/42 = 420 - 162/42 = 258/42 - After reducing the fraction, the answer is 43/7
- In mixed form: 61/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-81/21 60/6-81/42 60/18-81/21 60/6-81/63 60/30-81/21 60/42-81/21