Subtract 70/9 from 27/15
1st number: 1 12/15, 2nd number: 7 7/9
27/15 - 70/9 is -269/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
27/15 = 27 × 3/15 × 3 = 81/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
70/9 = 70 × 5/9 × 5 = 350/45 - Subtract the two like fractions:
81/45 - 350/45 = 81 - 350/45 = -269/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-70/9 27/30-70/9 27/15-70/18 81/15-70/9 27/45-70/9 27/15-70/27 27/75-70/9 27/15-70/45 27/15-70/63