Subtract 56/21 from 50/18
1st number: 2 14/18, 2nd number: 2 14/21
50/18 - 56/21 is 1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
50/18 = 50 × 7/18 × 7 = 350/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
56/21 = 56 × 6/21 × 6 = 336/126 - Subtract the two like fractions:
350/126 - 336/126 = 350 - 336/126 = 14/126 - After reducing the fraction, the answer is 1/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/36-56/21 50/18-56/42 50/54-56/21 50/18-56/63 50/90-56/21