Subtract 9/49 from 28/72
28/72 - 9/49 is 181/882.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 72 × 49 = 3528,
28/72 = 28 × 49/72 × 49 = 1372/3528 - Likewise, for the 2nd fraction, since 49 × 72 = 3528,
9/49 = 9 × 72/49 × 72 = 648/3528 - Subtract the two like fractions:
1372/3528 - 648/3528 = 1372 - 648/3528 = 724/3528 - After reducing the fraction, the answer is 181/882
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72-9/49 28/72-18/49 28/72-9/98 84/72-9/49 28/72-27/49 28/72-45/49 28/72-63/49