Subtract 21/7 from 7/6
1st number: 1 1/6, 2nd number: 3 0/7
7/6 - 21/7 is -11/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
7/6 = 7 × 7/6 × 7 = 49/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
21/7 = 21 × 6/7 × 6 = 126/42 - Subtract the two like fractions:
49/42 - 126/42 = 49 - 126/42 = -77/42 - After reducing the fraction, the answer is -11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/6-21/7 7/6-42/7 7/12-21/7 7/6-21/14 21/6-21/7 7/6-63/7 7/18-21/7 35/6-21/7 7/30-21/7 7/6-21/35 49/6-21/7 7/42-21/7 7/6-21/49