Subtract 60/54 from 28/21
1st number: 1 7/21, 2nd number: 1 6/54
28/21 - 60/54 is 2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
28/21 = 28 × 18/21 × 18 = 504/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
60/54 = 60 × 7/54 × 7 = 420/378 - Subtract the two like fractions:
504/378 - 420/378 = 504 - 420/378 = 84/378 - After reducing the fraction, the answer is 2/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21-60/54 28/42-60/54 84/21-60/54 28/63-60/54