Subtract 28/8 from 21/3
1st number: 7 0/3, 2nd number: 3 4/8
21/3 - 28/8 is 7/2.
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,
21/3 = 21 × 8/3 × 8 = 168/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
28/8 = 28 × 3/8 × 3 = 84/24 - Subtract the two like fractions:
168/24 - 84/24 = 168 - 84/24 = 84/24 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
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