Subtract 36/49 from 3/42
3/42 - 36/49 is -65/98.
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,
36/49 = 36 × 6/49 × 6 = 216/294 - Subtract the two like fractions:
21/294 - 216/294 = 21 - 216/294 = -195/294 - After reducing the fraction, the answer is -65/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42-36/49 3/42-72/49 3/84-36/49 3/42-36/98 9/42-36/49 15/42-36/49 21/42-36/49