Subtract 40/27 from 28/40
1st number: 28/40, 2nd number: 1 13/27
28/40 - 40/27 is -211/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
28/40 = 28 × 27/40 × 27 = 756/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
40/27 = 40 × 40/27 × 40 = 1600/1080 - Subtract the two like fractions:
756/1080 - 1600/1080 = 756 - 1600/1080 = -844/1080 - After reducing the fraction, the answer is -211/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40-40/27 28/40-80/27 28/80-40/27 28/40-40/54 84/40-40/27 28/40-40/81