Subtract 7/21 from 15/3
1st number: 5 0/3, 2nd number: 7/21
15/3 - 7/21 is 14/3.
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,
15/3 = 15 × 7/3 × 7 = 105/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
7/21 = 7 × 1/21 × 1 = 7/21 - Subtract the two like fractions:
105/21 - 7/21 = 105 - 7/21 = 98/21 - After reducing the fraction, the answer is 14/3
- In mixed form: 42/3
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