Subtract 60/8 from 28/21
1st number: 1 7/21, 2nd number: 7 4/8
28/21 - 60/8 is -37/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
28/21 = 28 × 8/21 × 8 = 224/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
60/8 = 60 × 21/8 × 21 = 1260/168 - Subtract the two like fractions:
224/168 - 1260/168 = 224 - 1260/168 = -1036/168 - After reducing the fraction, the answer is -37/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21-60/8 28/42-60/8 28/21-60/16 84/21-60/8 28/63-60/8 28/21-60/24 28/21-60/40 28/21-60/56