Subtract 28/48 from 7/72
7/72 - 28/48 is -35/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 48 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
7/72 = 7 × 2/72 × 2 = 14/144 - Likewise, for the 2nd fraction, since 48 × 3 = 144,
28/48 = 28 × 3/48 × 3 = 84/144 - Subtract the two like fractions:
14/144 - 84/144 = 14 - 84/144 = -70/144 - After reducing the fraction, the answer is -35/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-28/48 7/72-56/48 7/72-28/96 21/72-28/48 7/72-84/48 35/72-28/48 49/72-28/48