Subtract 28/49 from 7/25
7/25 - 28/49 is -51/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 49 is 1225
Next, find the equivalent fraction of both fractional numbers with denominator 1225 - For the 1st fraction, since 25 × 49 = 1225,
7/25 = 7 × 49/25 × 49 = 343/1225 - Likewise, for the 2nd fraction, since 49 × 25 = 1225,
28/49 = 28 × 25/49 × 25 = 700/1225 - Subtract the two like fractions:
343/1225 - 700/1225 = 343 - 700/1225 = -357/1225 - After reducing the fraction, the answer is -51/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/25-28/49 7/25-56/49 7/50-28/49 7/25-28/98 21/25-28/49 7/25-84/49 7/75-28/49 35/25-28/49 49/25-28/49