Subtract 90/4 from 5/2
1st number: 2 1/2, 2nd number: 22 2/4
5/2 - 90/4 is -20/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 4 is 4
Next, find the equivalent fraction of both fractional numbers with denominator 4 - For the 1st fraction, since 2 × 2 = 4,
5/2 = 5 × 2/2 × 2 = 10/4 - Likewise, for the 2nd fraction, since 4 × 1 = 4,
90/4 = 90 × 1/4 × 1 = 90/4 - Subtract the two like fractions:
10/4 - 90/4 = 10 - 90/4 = -80/4 - After reducing the fraction, the answer is -20/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/2-90/4 5/4-90/4 5/2-90/8 15/2-90/4 5/6-90/4 5/2-90/12 25/2-90/4 5/10-90/4 5/2-90/20 35/2-90/4 5/14-90/4 5/2-90/28