Subtract 28/27 from 9/40
1st number: 9/40, 2nd number: 1 1/27
9/40 - 28/27 is -877/1080.
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,
9/40 = 9 × 27/40 × 27 = 243/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
28/27 = 28 × 40/27 × 40 = 1120/1080 - Subtract the two like fractions:
243/1080 - 1120/1080 = 243 - 1120/1080 = -877/1080
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40-28/27 9/40-56/27 9/80-28/27 9/40-28/54 27/40-28/27 9/40-84/27 9/40-28/81 45/40-28/27 63/40-28/27