Subtract 4/15 from 90/28
1st number: 3 6/28, 2nd number: 4/15
90/28 - 4/15 is 619/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
90/28 = 90 × 15/28 × 15 = 1350/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
4/15 = 4 × 28/15 × 28 = 112/420 - Subtract the two like fractions:
1350/420 - 112/420 = 1350 - 112/420 = 1238/420 - After reducing the fraction, the answer is 619/210
- In mixed form: 2199/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-8/15 90/56-4/15 90/28-4/30 90/28-12/15 90/84-4/15 90/28-4/45 90/28-20/15 90/28-4/75 90/28-28/15