Subtract 63/28 from 15/45
1st number: 15/45, 2nd number: 2 7/28
15/45 - 63/28 is -23/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
15/45 = 15 × 28/45 × 28 = 420/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
63/28 = 63 × 45/28 × 45 = 2835/1260 - Subtract the two like fractions:
420/1260 - 2835/1260 = 420 - 2835/1260 = -2415/1260 - After reducing the fraction, the answer is -23/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45-63/28 15/90-63/28 15/45-63/56 15/45-63/84 75/45-63/28