Subtract 70/81 from 30/9
1st number: 3 3/9, 2nd number: 70/81
30/9 - 70/81 is 200/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
30/9 = 30 × 9/9 × 9 = 270/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
70/81 = 70 × 1/81 × 1 = 70/81 - Subtract the two like fractions:
270/81 - 70/81 = 270 - 70/81 = 200/81 - In mixed form: 238/81
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