Subtract 90/27 from 10/9
1st number: 1 1/9, 2nd number: 3 9/27
10/9 - 90/27 is -20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 9 × 3 = 27,
10/9 = 10 × 3/9 × 3 = 30/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
90/27 = 90 × 1/27 × 1 = 90/27 - Subtract the two like fractions:
30/27 - 90/27 = 30 - 90/27 = -60/27 - After reducing the fraction, the answer is -20/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/9-90/27 10/18-90/27 10/9-90/54 30/9-90/27 10/27-90/27 10/9-90/81 50/9-90/27 10/45-90/27 70/9-90/27 10/63-90/27