Subtract 1/90 from 1/10
1/10 - 1/90 is 4/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
1/10 = 1 × 9/10 × 9 = 9/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Subtract the two like fractions:
9/90 - 1/90 = 9 - 1/90 = 8/90 - After reducing the fraction, the answer is 4/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/10-1/90 1/10-2/90 1/20-1/90 3/10-1/90 1/10-3/90 1/30-1/90 5/10-1/90 1/10-5/90 1/50-1/90 7/10-1/90 1/10-7/90 1/70-1/90