Subtract 21/9 from 12/3
1st number: 4 0/3, 2nd number: 2 3/9
12/3 - 21/9 is 5/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 9 is 9
Next, find the equivalent fraction of both fractional numbers with denominator 9 - For the 1st fraction, since 3 × 3 = 9,
12/3 = 12 × 3/3 × 3 = 36/9 - Likewise, for the 2nd fraction, since 9 × 1 = 9,
21/9 = 21 × 1/9 × 1 = 21/9 - Subtract the two like fractions:
36/9 - 21/9 = 36 - 21/9 = 15/9 - After reducing the fraction, the answer is 5/3
- In mixed form: 12/3
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