Subtract 32/18 from 20/7
1st number: 2 6/7, 2nd number: 1 14/18
20/7 - 32/18 is 68/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
20/7 = 20 × 18/7 × 18 = 360/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
32/18 = 32 × 7/18 × 7 = 224/126 - Subtract the two like fractions:
360/126 - 224/126 = 360 - 224/126 = 136/126 - After reducing the fraction, the answer is 68/63
- In mixed form: 15/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7-32/18 20/7-64/18 20/14-32/18 20/7-32/36 60/7-32/18 20/7-96/18 20/21-32/18 20/7-32/54 20/35-32/18 20/7-32/90 20/49-32/18