Subtract 5/90 from 5/4
1st number: 1 1/4, 2nd number: 5/90
5/4 - 5/90 is 43/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
5/4 = 5 × 45/4 × 45 = 225/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
5/90 = 5 × 2/90 × 2 = 10/180 - Subtract the two like fractions:
225/180 - 10/180 = 225 - 10/180 = 215/180 - After reducing the fraction, the answer is 43/36
- In mixed form: 17/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4-5/90 5/4-10/90 5/8-5/90 15/4-5/90 5/4-15/90 5/12-5/90 25/4-5/90 5/4-25/90 5/20-5/90 35/4-5/90 5/4-35/90 5/28-5/90