Subtract 24/81 from 81/30
1st number: 2 21/30, 2nd number: 24/81
81/30 - 24/81 is 649/270.
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,
81/30 = 81 × 27/30 × 27 = 2187/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
24/81 = 24 × 10/81 × 10 = 240/810 - Subtract the two like fractions:
2187/810 - 240/810 = 2187 - 240/810 = 1947/810 - After reducing the fraction, the answer is 649/270
- In mixed form: 2109/270
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