Subtract 40/27 from 21/35
1st number: 21/35, 2nd number: 1 13/27
21/35 - 40/27 is -119/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 27 is 945
Next, find the equivalent fraction of both fractional numbers with denominator 945 - For the 1st fraction, since 35 × 27 = 945,
21/35 = 21 × 27/35 × 27 = 567/945 - Likewise, for the 2nd fraction, since 27 × 35 = 945,
40/27 = 40 × 35/27 × 35 = 1400/945 - Subtract the two like fractions:
567/945 - 1400/945 = 567 - 1400/945 = -833/945 - After reducing the fraction, the answer is -119/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35-40/27 21/35-80/27 21/70-40/27 21/35-40/54 63/35-40/27 21/35-40/81