Subtract 15/28 from 90/18
1st number: 5 0/18, 2nd number: 15/28
90/18 - 15/28 is 125/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
90/18 = 90 × 14/18 × 14 = 1260/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
15/28 = 15 × 9/28 × 9 = 135/252 - Subtract the two like fractions:
1260/252 - 135/252 = 1260 - 135/252 = 1125/252 - After reducing the fraction, the answer is 125/28
- In mixed form: 413/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-30/28 90/36-15/28 90/18-15/56 90/18-45/28 90/54-15/28 90/18-15/84 90/18-75/28