Subtract 10/4 from 8/81
1st number: 8/81, 2nd number: 2 2/4
8/81 - 10/4 is -389/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
8/81 = 8 × 4/81 × 4 = 32/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
10/4 = 10 × 81/4 × 81 = 810/324 - Subtract the two like fractions:
32/324 - 810/324 = 32 - 810/324 = -778/324 - After reducing the fraction, the answer is -389/162
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