Subtract 7/81 from 70/30
1st number: 2 10/30, 2nd number: 7/81
70/30 - 7/81 is 182/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
70/30 = 70 × 27/30 × 27 = 1890/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
7/81 = 7 × 10/81 × 10 = 70/810 - Subtract the two like fractions:
1890/810 - 70/810 = 1890 - 70/810 = 1820/810 - After reducing the fraction, the answer is 182/81
- In mixed form: 220/81
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