Subtract 7/21 from 6/4
1st number: 1 2/4, 2nd number: 7/21
6/4 - 7/21 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
6/4 = 6 × 21/4 × 21 = 126/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
7/21 = 7 × 4/21 × 4 = 28/84 - Subtract the two like fractions:
126/84 - 28/84 = 126 - 28/84 = 98/84 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/4-7/21 6/4-14/21 6/8-7/21 6/4-7/42 18/4-7/21 6/12-7/21 6/4-7/63 30/4-7/21 6/4-35/21 6/20-7/21 42/4-7/21 6/4-49/21 6/28-7/21