Subtract 32/7 from 15/18
1st number: 15/18, 2nd number: 4 4/7
15/18 - 32/7 is -157/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
32/7 = 32 × 18/7 × 18 = 576/126 - Subtract the two like fractions:
105/126 - 576/126 = 105 - 576/126 = -471/126 - After reducing the fraction, the answer is -157/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-32/7 15/18-64/7 15/36-32/7 15/18-32/14 45/18-32/7 15/18-96/7 15/54-32/7 15/18-32/21 75/18-32/7 15/90-32/7 15/18-32/35 15/18-32/49