Subtract 30/84 from 81/2
1st number: 40 1/2, 2nd number: 30/84
81/2 - 30/84 is 281/7.
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,
30/84 = 30 × 1/84 × 1 = 30/84 - Subtract the two like fractions:
3402/84 - 30/84 = 3402 - 30/84 = 3372/84 - After reducing the fraction, the answer is 281/7
- In mixed form: 401/7
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