Subtract 28/10 from 32/21
1st number: 1 11/21, 2nd number: 2 8/10
32/21 - 28/10 is -134/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
32/21 = 32 × 10/21 × 10 = 320/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
28/10 = 28 × 21/10 × 21 = 588/210 - Subtract the two like fractions:
320/210 - 588/210 = 320 - 588/210 = -268/210 - After reducing the fraction, the answer is -134/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/21-28/10 32/21-56/10 32/42-28/10 32/21-28/20 96/21-28/10 32/21-84/10 32/63-28/10 32/21-28/30 32/21-28/50 32/21-28/70