Subtract 49/48 from 28/90
1st number: 28/90, 2nd number: 1 1/48
28/90 - 49/48 is -511/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
28/90 = 28 × 8/90 × 8 = 224/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
49/48 = 49 × 15/48 × 15 = 735/720 - Subtract the two like fractions:
224/720 - 735/720 = 224 - 735/720 = -511/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90-49/48 28/90-98/48 28/90-49/96 84/90-49/48