Subtract 12/9 from 21/3
1st number: 7 0/3, 2nd number: 1 3/9
21/3 - 12/9 is 17/3.
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,
21/3 = 21 × 3/3 × 3 = 63/9 - Likewise, for the 2nd fraction, since 9 × 1 = 9,
12/9 = 12 × 1/9 × 1 = 12/9 - Subtract the two like fractions:
63/9 - 12/9 = 63 - 12/9 = 51/9 - After reducing the fraction, the answer is 17/3
- In mixed form: 52/3
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