Subtract 45/28 from 90/24
1st number: 3 18/24, 2nd number: 1 17/28
90/24 - 45/28 is 15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 28 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
90/24 = 90 × 7/24 × 7 = 630/168 - Likewise, for the 2nd fraction, since 28 × 6 = 168,
45/28 = 45 × 6/28 × 6 = 270/168 - Subtract the two like fractions:
630/168 - 270/168 = 630 - 270/168 = 360/168 - After reducing the fraction, the answer is 15/7
- In mixed form: 21/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24-90/28 90/48-45/28 90/24-45/56 90/72-45/28 90/24-45/84