Subtract 20/21 from 60/12
1st number: 5 0/12, 2nd number: 20/21
60/12 - 20/21 is 85/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
60/12 = 60 × 7/12 × 7 = 420/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
20/21 = 20 × 4/21 × 4 = 80/84 - Subtract the two like fractions:
420/84 - 80/84 = 420 - 80/84 = 340/84 - After reducing the fraction, the answer is 85/21
- In mixed form: 41/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-40/21 60/24-20/21 60/12-20/42 60/12-60/21 60/36-20/21 60/12-20/63 60/84-20/21