Subtract 32/18 from 3/7
1st number: 3/7, 2nd number: 1 14/18
3/7 - 32/18 is -85/63.
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,
3/7 = 3 × 18/7 × 18 = 54/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
32/18 = 32 × 7/18 × 7 = 224/126 - Subtract the two like fractions:
54/126 - 224/126 = 54 - 224/126 = -170/126 - After reducing the fraction, the answer is -85/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7-32/18 3/7-64/18 3/14-32/18 3/7-32/36 9/7-32/18 3/7-96/18 3/21-32/18 3/7-32/54 15/7-32/18 3/35-32/18 3/7-32/90 21/7-32/18 3/49-32/18