Subtract 12/48 from 3/28
3/28 - 12/48 is -1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 28 × 12 = 336,
3/28 = 3 × 12/28 × 12 = 36/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
12/48 = 12 × 7/48 × 7 = 84/336 - Subtract the two like fractions:
36/336 - 84/336 = 36 - 84/336 = -48/336 - After reducing the fraction, the answer is -1/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/28-12/48 3/28-24/48 3/56-12/48 3/28-12/96 9/28-12/48 3/28-36/48 3/84-12/48 15/28-12/48 3/28-60/48 21/28-12/48 3/28-84/48