Subtract 30/16 from 21/6
1st number: 3 3/6, 2nd number: 1 14/16
21/6 - 30/16 is 13/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 6 × 8 = 48,
21/6 = 21 × 8/6 × 8 = 168/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
30/16 = 30 × 3/16 × 3 = 90/48 - Subtract the two like fractions:
168/48 - 90/48 = 168 - 90/48 = 78/48 - After reducing the fraction, the answer is 13/8
- In mixed form: 15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-30/16 21/6-60/16 21/12-30/16 21/6-30/32 63/6-30/16 21/6-90/16 21/18-30/16 21/6-30/48 21/30-30/16 21/6-30/80 21/42-30/16