Subtract 8/18 from 81/2
1st number: 40 1/2, 2nd number: 8/18
81/2 - 8/18 is 721/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
81/2 = 81 × 9/2 × 9 = 729/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
8/18 = 8 × 1/18 × 1 = 8/18 - Subtract the two like fractions:
729/18 - 8/18 = 729 - 8/18 = 721/18 - In mixed form: 401/18
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