Subtract 81/8 from 84/4
1st number: 21 0/4, 2nd number: 10 1/8
84/4 - 81/8 is 87/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
84/4 = 84 × 2/4 × 2 = 168/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
81/8 = 81 × 1/8 × 1 = 81/8 - Subtract the two like fractions:
168/8 - 81/8 = 168 - 81/8 = 87/8 - In mixed form: 107/8
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