Subtract 16/63 from 21/3
1st number: 7 0/3, 2nd number: 16/63
21/3 - 16/63 is 425/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 3 × 21 = 63,
21/3 = 21 × 21/3 × 21 = 441/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
16/63 = 16 × 1/63 × 1 = 16/63 - Subtract the two like fractions:
441/63 - 16/63 = 441 - 16/63 = 425/63 - In mixed form: 647/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-16/63 21/3-32/63 21/6-16/63 63/3-16/63 21/3-48/63 21/9-16/63 21/3-80/63 21/15-16/63