Subtract 16/21 from 56/18
1st number: 3 2/18, 2nd number: 16/21
56/18 - 16/21 is 148/63.
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,
56/18 = 56 × 7/18 × 7 = 392/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
16/21 = 16 × 6/21 × 6 = 96/126 - Subtract the two like fractions:
392/126 - 96/126 = 392 - 96/126 = 296/126 - After reducing the fraction, the answer is 148/63
- In mixed form: 222/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-32/21 56/36-16/21 56/18-16/42 56/18-48/21 56/54-16/21 56/18-16/63 56/18-80/21 56/90-16/21