Subtract 9/81 from 30/4
1st number: 7 2/4, 2nd number: 9/81
30/4 - 9/81 is 133/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
30/4 = 30 × 81/4 × 81 = 2430/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
9/81 = 9 × 4/81 × 4 = 36/324 - Subtract the two like fractions:
2430/324 - 36/324 = 2430 - 36/324 = 2394/324 - After reducing the fraction, the answer is 133/18
- In mixed form: 77/18
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