Subtract 3/49 from 3/42
3/42 - 3/49 is 1/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
3/42 = 3 × 7/42 × 7 = 21/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
3/49 = 3 × 6/49 × 6 = 18/294 - Subtract the two like fractions:
21/294 - 18/294 = 21 - 18/294 = 3/294 - After reducing the fraction, the answer is 1/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42-3/49 3/42-6/49 3/84-3/49 3/42-3/98 9/42-3/49 3/42-9/49 15/42-3/49 3/42-15/49 21/42-3/49 3/42-21/49