Subtract 28/21 from 6/63
1st number: 6/63, 2nd number: 1 7/21
6/63 - 28/21 is -26/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
6/63 = 6 × 1/63 × 1 = 6/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
28/21 = 28 × 3/21 × 3 = 84/63 - Subtract the two like fractions:
6/63 - 84/63 = 6 - 84/63 = -78/63 - After reducing the fraction, the answer is -26/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/63-28/21 6/63-56/21 6/63-28/42 18/63-28/21 6/63-84/21 6/63-28/63 30/63-28/21 42/63-28/21