Subtract 40/30 from 10/20
1st number: 10/20, 2nd number: 1 10/30
10/20 - 40/30 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
10/20 = 10 × 3/20 × 3 = 30/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
40/30 = 40 × 2/30 × 2 = 80/60 - Subtract the two like fractions:
30/60 - 80/60 = 30 - 80/60 = -50/60 - After reducing the fraction, the answer is -5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-80/30 10/40-40/30 10/20-40/60 30/20-40/30 10/60-40/30 10/20-40/90 50/20-40/30 70/20-40/30