Subtract 21/3 from 7/84
1st number: 7/84, 2nd number: 7 0/3
7/84 - 21/3 is -83/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
7/84 = 7 × 1/84 × 1 = 7/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
21/3 = 21 × 28/3 × 28 = 588/84 - Subtract the two like fractions:
7/84 - 588/84 = 7 - 588/84 = -581/84 - After reducing the fraction, the answer is -83/12
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