Subtract 10/4 from 90/18
1st number: 5 0/18, 2nd number: 2 2/4
90/18 - 10/4 is 5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
90/18 = 90 × 2/18 × 2 = 180/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
10/4 = 10 × 9/4 × 9 = 90/36 - Subtract the two like fractions:
180/36 - 90/36 = 180 - 90/36 = 90/36 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-20/4 90/36-10/4 90/18-10/8 90/18-30/4 90/54-10/4 90/18-10/12 90/18-50/4 90/18-10/20 90/18-70/4 90/18-10/28