Subtract 20/15 from 7/4
1st number: 1 3/4, 2nd number: 1 5/15
7/4 - 20/15 is 5/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
7/4 = 7 × 15/4 × 15 = 105/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
20/15 = 20 × 4/15 × 4 = 80/60 - Subtract the two like fractions:
105/60 - 80/60 = 105 - 80/60 = 25/60 - After reducing the fraction, the answer is 5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4-20/15 7/4-40/15 7/8-20/15 7/4-20/30 21/4-20/15 7/4-60/15 7/12-20/15 7/4-20/45 35/4-20/15 7/20-20/15 7/4-20/75 49/4-20/15 7/28-20/15