Subtract 40/81 from 90/3
1st number: 30 0/3, 2nd number: 40/81
90/3 - 40/81 is 2390/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
90/3 = 90 × 27/3 × 27 = 2430/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
40/81 = 40 × 1/81 × 1 = 40/81 - Subtract the two like fractions:
2430/81 - 40/81 = 2430 - 40/81 = 2390/81 - In mixed form: 2941/81
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