Subtract 9/90 from 5/2
1st number: 2 1/2, 2nd number: 9/90
5/2 - 9/90 is 12/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
5/2 = 5 × 45/2 × 45 = 225/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
9/90 = 9 × 1/90 × 1 = 9/90 - Subtract the two like fractions:
225/90 - 9/90 = 225 - 9/90 = 216/90 - After reducing the fraction, the answer is 12/5
- In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/2-9/90 5/2-18/90 5/4-9/90 15/2-9/90 5/2-27/90 5/6-9/90 25/2-9/90 5/2-45/90 5/10-9/90 35/2-9/90 5/2-63/90 5/14-9/90