Subtract 21/8 from 84/3
1st number: 28 0/3, 2nd number: 2 5/8
84/3 - 21/8 is 203/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 3 × 8 = 24,
84/3 = 84 × 8/3 × 8 = 672/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
21/8 = 21 × 3/8 × 3 = 63/24 - Subtract the two like fractions:
672/24 - 63/24 = 672 - 63/24 = 609/24 - After reducing the fraction, the answer is 203/8
- In mixed form: 253/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/3-42/8 84/6-21/8 84/3-21/16 84/3-63/8 84/9-21/8 84/3-21/24 84/15-21/8 84/3-21/40 84/21-21/8 84/3-21/56