Subtract 24/84 from 72/21
1st number: 3 9/21, 2nd number: 24/84
72/21 - 24/84 is 22/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
72/21 = 72 × 4/21 × 4 = 288/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
24/84 = 24 × 1/84 × 1 = 24/84 - Subtract the two like fractions:
288/84 - 24/84 = 288 - 24/84 = 264/84 - After reducing the fraction, the answer is 22/7
- In mixed form: 31/7
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