Subtract 80/7 from 60/21
1st number: 2 18/21, 2nd number: 11 3/7
60/21 - 80/7 is -60/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
60/21 = 60 × 1/21 × 1 = 60/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
80/7 = 80 × 3/7 × 3 = 240/21 - Subtract the two like fractions:
60/21 - 240/21 = 60 - 240/21 = -180/21 - After reducing the fraction, the answer is -60/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42-80/7 60/21-80/14 60/63-80/7 60/21-80/21 60/21-80/35 60/21-80/49