Subtract 70/49 from 14/42
1st number: 14/42, 2nd number: 1 21/49
14/42 - 70/49 is -23/21.
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,
14/42 = 14 × 7/42 × 7 = 98/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
70/49 = 70 × 6/49 × 6 = 420/294 - Subtract the two like fractions:
98/294 - 420/294 = 98 - 420/294 = -322/294 - After reducing the fraction, the answer is -23/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/42-70/49 14/84-70/49 14/42-70/98 70/42-70/49 98/42-70/49