Subtract 81/36 from 21/2
1st number: 10 1/2, 2nd number: 2 9/36
21/2 - 81/36 is 33/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 2 × 18 = 36,
21/2 = 21 × 18/2 × 18 = 378/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
81/36 = 81 × 1/36 × 1 = 81/36 - Subtract the two like fractions:
378/36 - 81/36 = 378 - 81/36 = 297/36 - After reducing the fraction, the answer is 33/4
- In mixed form: 81/4
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