Subtract 15/20 from 40/2
1st number: 20 0/2, 2nd number: 15/20
40/2 - 15/20 is 77/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
40/2 = 40 × 10/2 × 10 = 400/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Subtract the two like fractions:
400/20 - 15/20 = 400 - 15/20 = 385/20 - After reducing the fraction, the answer is 77/4
- In mixed form: 191/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/2-15/20 40/2-30/20 40/4-15/20 40/2-15/40 40/2-45/20 40/6-15/20 40/2-15/60 40/2-75/20 40/10-15/20 40/14-15/20