Subtract 40/10 from 20/12
1st number: 1 8/12, 2nd number: 4 0/10
20/12 - 40/10 is -7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 10 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60 - Likewise, for the 2nd fraction, since 10 × 6 = 60,
40/10 = 40 × 6/10 × 6 = 240/60 - Subtract the two like fractions:
100/60 - 240/60 = 100 - 240/60 = -140/60 - After reducing the fraction, the answer is -7/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-40/10 20/12-80/10 20/24-40/10 20/12-40/20 60/12-40/10 20/36-40/10 20/12-40/30 20/60-40/10 20/12-40/50 20/84-40/10 20/12-40/70