Subtract 27/30 from 2/90
2/90 - 27/30 is -79/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
2/90 = 2 × 1/90 × 1 = 2/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
27/30 = 27 × 3/30 × 3 = 81/90 - Subtract the two like fractions:
2/90 - 81/90 = 2 - 81/90 = -79/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/90-27/30 2/90-54/30 2/90-27/60 6/90-27/30 2/90-81/30 2/90-27/90 10/90-27/30 14/90-27/30