Subtract 63/15 from 28/18
1st number: 1 10/18, 2nd number: 4 3/15
28/18 - 63/15 is -119/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
63/15 = 63 × 6/15 × 6 = 378/90 - Subtract the two like fractions:
140/90 - 378/90 = 140 - 378/90 = -238/90 - After reducing the fraction, the answer is -119/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-63/15 28/36-63/15 28/18-63/30 84/18-63/15 28/54-63/15 28/18-63/45 28/90-63/15 28/18-63/75