Subtract 28/18 from 50/63
1st number: 50/63, 2nd number: 1 10/18
50/63 - 28/18 is -16/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
50/63 = 50 × 2/63 × 2 = 100/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
28/18 = 28 × 7/18 × 7 = 196/126 - Subtract the two like fractions:
100/126 - 196/126 = 100 - 196/126 = -96/126 - After reducing the fraction, the answer is -16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/63-56/18 50/63-28/36 50/63-84/18 50/63-28/54 50/63-28/90