Subtract 10/5 from 12/40
1st number: 12/40, 2nd number: 2 0/5
12/40 - 10/5 is -17/10.
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,
12/40 = 12 × 1/40 × 1 = 12/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
10/5 = 10 × 8/5 × 8 = 80/40 - Subtract the two like fractions:
12/40 - 80/40 = 12 - 80/40 = -68/40 - After reducing the fraction, the answer is -17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40-10/5 12/40-20/5 12/80-10/5 36/40-10/5 12/40-30/5 12/40-10/15 60/40-10/5 12/40-50/5 12/40-10/25 84/40-10/5 12/40-70/5 12/40-10/35