Subtract 48/15 from 90/28
1st number: 3 6/28, 2nd number: 3 3/15
90/28 - 48/15 is 1/70.
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,
48/15 = 48 × 28/15 × 28 = 1344/420 - Subtract the two like fractions:
1350/420 - 1344/420 = 1350 - 1344/420 = 6/420 - After reducing the fraction, the answer is 1/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-96/15 90/56-48/15 90/28-48/30 90/84-48/15 90/28-48/45 90/28-48/75