Subtract 15/7 from 2/18
1st number: 2/18, 2nd number: 2 1/7
2/18 - 15/7 is -128/63.
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,
2/18 = 2 × 7/18 × 7 = 14/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
15/7 = 15 × 18/7 × 18 = 270/126 - Subtract the two like fractions:
14/126 - 270/126 = 14 - 270/126 = -256/126 - After reducing the fraction, the answer is -128/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/18-15/7 2/18-30/7 2/36-15/7 2/18-15/14 6/18-15/7 2/18-45/7 2/54-15/7 2/18-15/21 10/18-15/7 2/18-75/7 2/90-15/7 2/18-15/35 14/18-15/7 2/18-15/49