Subtract 21/6 from 56/40
1st number: 1 16/40, 2nd number: 3 3/6
56/40 - 21/6 is -21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
56/40 = 56 × 3/40 × 3 = 168/120 - Likewise, for the 2nd fraction, since 6 × 20 = 120,
21/6 = 21 × 20/6 × 20 = 420/120 - Subtract the two like fractions:
168/120 - 420/120 = 168 - 420/120 = -252/120 - After reducing the fraction, the answer is -21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40-42/6 56/80-21/6 56/40-21/12 56/40-63/6 56/40-21/18 56/40-21/30 56/40-21/42