Subtract 28/48 from 49/90
49/90 - 28/48 is -7/180.
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,
49/90 = 49 × 8/90 × 8 = 392/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
28/48 = 28 × 15/48 × 15 = 420/720 - Subtract the two like fractions:
392/720 - 420/720 = 392 - 420/720 = -28/720 - After reducing the fraction, the answer is -7/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/90-28/48 49/90-56/48 49/90-28/96 49/90-84/48