Subtract 20/5 from 27/40
1st number: 27/40, 2nd number: 4 0/5
27/40 - 20/5 is -133/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
27/40 = 27 × 1/40 × 1 = 27/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
20/5 = 20 × 8/5 × 8 = 160/40 - Subtract the two like fractions:
27/40 - 160/40 = 27 - 160/40 = -133/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40-20/5 27/40-40/5 27/80-20/5 27/40-20/10 81/40-20/5 27/40-60/5 27/40-20/15 27/40-20/25 27/40-20/35