Subtract 10/84 from 81/2
1st number: 40 1/2, 2nd number: 10/84
81/2 - 10/84 is 848/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 2 × 42 = 84,
81/2 = 81 × 42/2 × 42 = 3402/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
10/84 = 10 × 1/84 × 1 = 10/84 - Subtract the two like fractions:
3402/84 - 10/84 = 3402 - 10/84 = 3392/84 - After reducing the fraction, the answer is 848/21
- In mixed form: 408/21
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