Subtract 21/7 from 8/3
1st number: 2 2/3, 2nd number: 3 0/7
8/3 - 21/7 is -1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
8/3 = 8 × 7/3 × 7 = 56/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
21/7 = 21 × 3/7 × 3 = 63/21 - Subtract the two like fractions:
56/21 - 63/21 = 56 - 63/21 = -7/21 - After reducing the fraction, the answer is -1/3
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