Subtract 30/36 from 1/81
1/81 - 30/36 is -133/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 36 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
1/81 = 1 × 4/81 × 4 = 4/324 - Likewise, for the 2nd fraction, since 36 × 9 = 324,
30/36 = 30 × 9/36 × 9 = 270/324 - Subtract the two like fractions:
4/324 - 270/324 = 4 - 270/324 = -266/324 - After reducing the fraction, the answer is -133/162
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