Subtract 2/9 from 3/90
3/90 - 2/9 is -17/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
3/90 = 3 × 1/90 × 1 = 3/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
2/9 = 2 × 10/9 × 10 = 20/90 - Subtract the two like fractions:
3/90 - 20/90 = 3 - 20/90 = -17/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90-2/9 3/90-4/9 3/90-2/18 9/90-2/9 3/90-6/9 3/90-2/27 15/90-2/9 3/90-10/9 3/90-2/45 21/90-2/9 3/90-14/9 3/90-2/63