Subtract 7/84 from 21/9
1st number: 2 3/9, 2nd number: 7/84
21/9 - 7/84 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
21/9 = 21 × 28/9 × 28 = 588/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
7/84 = 7 × 3/84 × 3 = 21/252 - Subtract the two like fractions:
588/252 - 21/252 = 588 - 21/252 = 567/252 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
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