Subtract 18/30 from 2/90
2/90 - 18/30 is -26/45.
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,
18/30 = 18 × 3/30 × 3 = 54/90 - Subtract the two like fractions:
2/90 - 54/90 = 2 - 54/90 = -52/90 - After reducing the fraction, the answer is -26/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/90-18/30 2/90-36/30 2/90-18/60 6/90-18/30 2/90-54/30 2/90-18/90 10/90-18/30 2/90-90/30 14/90-18/30