Subtract 20/10 from 7/15
1st number: 7/15, 2nd number: 2 0/10
7/15 - 20/10 is -23/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
7/15 = 7 × 2/15 × 2 = 14/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
20/10 = 20 × 3/10 × 3 = 60/30 - Subtract the two like fractions:
14/30 - 60/30 = 14 - 60/30 = -46/30 - After reducing the fraction, the answer is -23/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15-20/10 7/15-40/10 7/30-20/10 21/15-20/10 7/15-60/10 7/45-20/10 7/15-20/30 35/15-20/10 7/75-20/10 7/15-20/50 49/15-20/10 7/15-20/70