Subtract 1/90 from 15/48
15/48 - 1/90 is 217/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
15/48 = 15 × 15/48 × 15 = 225/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
1/90 = 1 × 8/90 × 8 = 8/720 - Subtract the two like fractions:
225/720 - 8/720 = 225 - 8/720 = 217/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/48-1/90 15/48-2/90 15/96-1/90 45/48-1/90 15/48-3/90 75/48-1/90 15/48-5/90 15/48-7/90