Subtract 8/49 from 7/28
7/28 - 8/49 is 17/196.
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,
7/28 = 7 × 7/28 × 7 = 49/196 - Likewise, for the 2nd fraction, since 49 × 4 = 196,
8/49 = 8 × 4/49 × 4 = 32/196 - Subtract the two like fractions:
49/196 - 32/196 = 49 - 32/196 = 17/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-8/49 7/28-16/49 7/56-8/49 7/28-8/98 21/28-8/49 7/28-24/49 7/84-8/49 35/28-8/49 7/28-40/49 49/28-8/49 7/28-56/49