Subtract 15/5 from 10/40
1st number: 10/40, 2nd number: 3 0/5
10/40 - 15/5 is -11/4.
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,
10/40 = 10 × 1/40 × 1 = 10/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
15/5 = 15 × 8/5 × 8 = 120/40 - Subtract the two like fractions:
10/40 - 120/40 = 10 - 120/40 = -110/40 - After reducing the fraction, the answer is -11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-15/5 10/40-30/5 10/80-15/5 10/40-15/10 30/40-15/5 10/40-45/5 50/40-15/5 10/40-75/5 10/40-15/25 70/40-15/5 10/40-15/35