Subtract 15/14 from 7/42
1st number: 7/42, 2nd number: 1 1/14
7/42 - 15/14 is -19/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
7/42 = 7 × 1/42 × 1 = 7/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
15/14 = 15 × 3/14 × 3 = 45/42 - Subtract the two like fractions:
7/42 - 45/42 = 7 - 45/42 = -38/42 - After reducing the fraction, the answer is -19/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42-15/14 7/42-30/14 7/84-15/14 7/42-15/28 21/42-15/14 7/42-45/14 7/42-15/42 35/42-15/14 7/42-75/14 7/42-15/70 49/42-15/14 7/42-15/98