Subtract 20/5 from 40/15
1st number: 2 10/15, 2nd number: 4 0/5
40/15 - 20/5 is -4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
40/15 = 40 × 1/15 × 1 = 40/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
20/5 = 20 × 3/5 × 3 = 60/15 - Subtract the two like fractions:
40/15 - 60/15 = 40 - 60/15 = -20/15 - After reducing the fraction, the answer is -4/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15-20/5 40/15-40/5 40/30-20/5 40/15-20/10 40/15-60/5 40/45-20/5 40/15-20/15 40/75-20/5 40/15-20/25 40/15-20/35