Subtract 32/18 from 2/21
1st number: 2/21, 2nd number: 1 14/18
2/21 - 32/18 is -106/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
2/21 = 2 × 6/21 × 6 = 12/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
32/18 = 32 × 7/18 × 7 = 224/126 - Subtract the two like fractions:
12/126 - 224/126 = 12 - 224/126 = -212/126 - After reducing the fraction, the answer is -106/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-32/18 2/21-64/18 2/42-32/18 2/21-32/36 6/21-32/18 2/21-96/18 2/63-32/18 2/21-32/54 10/21-32/18 2/21-32/90 14/21-32/18