Subtract 40/36 from 56/21
1st number: 2 14/21, 2nd number: 1 4/36
56/21 - 40/36 is 14/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
56/21 = 56 × 12/21 × 12 = 672/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
40/36 = 40 × 7/36 × 7 = 280/252 - Subtract the two like fractions:
672/252 - 280/252 = 672 - 280/252 = 392/252 - After reducing the fraction, the answer is 14/9
- In mixed form: 15/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21-80/36 56/42-40/36 56/21-40/72 56/63-40/36