Subtract 42/27 from 28/60
1st number: 28/60, 2nd number: 1 15/27
28/60 - 42/27 is -49/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 60 × 9 = 540,
28/60 = 28 × 9/60 × 9 = 252/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
42/27 = 42 × 20/27 × 20 = 840/540 - Subtract the two like fractions:
252/540 - 840/540 = 252 - 840/540 = -588/540 - After reducing the fraction, the answer is -49/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/60-42/27 28/60-84/27 28/60-42/54 84/60-42/27 28/60-42/81