Subtract 81/8 from 30/2
1st number: 15 0/2, 2nd number: 10 1/8
30/2 - 81/8 is 39/8.
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,
30/2 = 30 × 4/2 × 4 = 120/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
81/8 = 81 × 1/8 × 1 = 81/8 - Subtract the two like fractions:
120/8 - 81/8 = 120 - 81/8 = 39/8 - In mixed form: 47/8
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