Subtract 84/12 from 21/9
1st number: 2 3/9, 2nd number: 7 0/12
21/9 - 84/12 is -14/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
84/12 = 84 × 3/12 × 3 = 252/36 - Subtract the two like fractions:
84/36 - 252/36 = 84 - 252/36 = -168/36 - After reducing the fraction, the answer is -14/3
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