Subtract 84/21 from 1/12
1st number: 1/12, 2nd number: 4 0/21
1/12 - 84/21 is -47/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
84/21 = 84 × 4/21 × 4 = 336/84 - Subtract the two like fractions:
7/84 - 336/84 = 7 - 336/84 = -329/84 - After reducing the fraction, the answer is -47/12
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