Subtract 30/4 from 4/81
1st number: 4/81, 2nd number: 7 2/4
4/81 - 30/4 is -1207/162.
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,
4/81 = 4 × 4/81 × 4 = 16/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
30/4 = 30 × 81/4 × 81 = 2430/324 - Subtract the two like fractions:
16/324 - 2430/324 = 16 - 2430/324 = -2414/324 - After reducing the fraction, the answer is -1207/162
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