Subtract 21/49 from 24/28
24/28 - 21/49 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 49 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 28 × 7 = 196,
24/28 = 24 × 7/28 × 7 = 168/196 - Likewise, for the 2nd fraction, since 49 × 4 = 196,
21/49 = 21 × 4/49 × 4 = 84/196 - Subtract the two like fractions:
168/196 - 84/196 = 168 - 84/196 = 84/196 - After reducing the fraction, the answer is 3/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/28-21/49 24/28-42/49 24/56-21/49 24/28-21/98 72/28-21/49 24/28-63/49 24/84-21/49