Subtract 20/8 from 40/56
1st number: 40/56, 2nd number: 2 4/8
40/56 - 20/8 is -25/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
40/56 = 40 × 1/56 × 1 = 40/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Subtract the two like fractions:
40/56 - 140/56 = 40 - 140/56 = -100/56 - After reducing the fraction, the answer is -25/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56-20/8 40/56-40/8 40/56-20/16 40/56-60/8 40/56-20/24 40/56-20/40 40/56-20/56