Subtract 70/9 from 20/27
1st number: 20/27, 2nd number: 7 7/9
20/27 - 70/9 is -190/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 9 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 27 × 1 = 27,
20/27 = 20 × 1/27 × 1 = 20/27 - Likewise, for the 2nd fraction, since 9 × 3 = 27,
70/9 = 70 × 3/9 × 3 = 210/27 - Subtract the two like fractions:
20/27 - 210/27 = 20 - 210/27 = -190/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27-70/9 20/54-70/9 20/27-70/18 60/27-70/9 20/81-70/9 20/27-70/27 20/27-70/45 20/27-70/63