Subtract 40/48 from 90/28
1st number: 3 6/28, 2nd number: 40/48
90/28 - 40/48 is 50/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 28 × 12 = 336,
90/28 = 90 × 12/28 × 12 = 1080/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
40/48 = 40 × 7/48 × 7 = 280/336 - Subtract the two like fractions:
1080/336 - 280/336 = 1080 - 280/336 = 800/336 - After reducing the fraction, the answer is 50/21
- In mixed form: 28/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-80/48 90/56-40/48 90/28-40/96 90/84-40/48