Subtract 7/90 from 1/9
1/9 - 7/90 is 1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
1/9 = 1 × 10/9 × 10 = 10/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
7/90 = 7 × 1/90 × 1 = 7/90 - Subtract the two like fractions:
10/90 - 7/90 = 10 - 7/90 = 3/90 - After reducing the fraction, the answer is 1/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-7/90 1/9-14/90 1/18-7/90 3/9-7/90 1/9-21/90 1/27-7/90 5/9-7/90 1/9-35/90 1/45-7/90 7/9-7/90 1/9-49/90 1/63-7/90