Subtract 12/16 from 10/21
10/21 - 12/16 is -23/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
10/21 = 10 × 16/21 × 16 = 160/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
12/16 = 12 × 21/16 × 21 = 252/336 - Subtract the two like fractions:
160/336 - 252/336 = 160 - 252/336 = -92/336 - After reducing the fraction, the answer is -23/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-12/16 10/21-24/16 10/42-12/16 10/21-12/32 30/21-12/16 10/21-36/16 10/63-12/16 10/21-12/48 50/21-12/16 10/21-60/16 10/21-12/80 70/21-12/16 10/21-84/16