Subtract 21/8 from 81/2
1st number: 40 1/2, 2nd number: 2 5/8
81/2 - 21/8 is 303/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
81/2 = 81 × 4/2 × 4 = 324/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
21/8 = 21 × 1/8 × 1 = 21/8 - Subtract the two like fractions:
324/8 - 21/8 = 324 - 21/8 = 303/8 - In mixed form: 377/8
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