Subtract 70/27 from 15/18
1st number: 15/18, 2nd number: 2 16/27
15/18 - 70/27 is -95/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
15/18 = 15 × 3/18 × 3 = 45/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
70/27 = 70 × 2/27 × 2 = 140/54 - Subtract the two like fractions:
45/54 - 140/54 = 45 - 140/54 = -95/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-70/27 15/36-70/27 15/18-70/54 45/18-70/27 15/54-70/27 15/18-70/81 75/18-70/27 15/90-70/27