Subtract 2/40 from 15/2
1st number: 7 1/2, 2nd number: 2/40
15/2 - 2/40 is 149/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
15/2 = 15 × 20/2 × 20 = 300/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
2/40 = 2 × 1/40 × 1 = 2/40 - Subtract the two like fractions:
300/40 - 2/40 = 300 - 2/40 = 298/40 - After reducing the fraction, the answer is 149/20
- In mixed form: 79/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2-2/40 15/2-4/40 15/4-2/40 15/2-2/80 45/2-2/40 15/2-6/40 15/6-2/40 75/2-2/40 15/2-10/40 15/10-2/40 15/2-14/40 15/14-2/40