Subtract 1/21 from 4/3
1st number: 1 1/3, 2nd number: 1/21
4/3 - 1/21 is 9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
4/3 = 4 × 7/3 × 7 = 28/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
1/21 = 1 × 1/21 × 1 = 1/21 - Subtract the two like fractions:
28/21 - 1/21 = 28 - 1/21 = 27/21 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
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