Subtract 21/9 from 8/84
1st number: 8/84, 2nd number: 2 3/9
8/84 - 21/9 is -47/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
8/84 = 8 × 3/84 × 3 = 24/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
21/9 = 21 × 28/9 × 28 = 588/252 - Subtract the two like fractions:
24/252 - 588/252 = 24 - 588/252 = -564/252 - After reducing the fraction, the answer is -47/21
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