Subtract 7/81 from 20/8
1st number: 2 4/8, 2nd number: 7/81
20/8 - 7/81 is 391/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
20/8 = 20 × 81/8 × 81 = 1620/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
7/81 = 7 × 8/81 × 8 = 56/648 - Subtract the two like fractions:
1620/648 - 56/648 = 1620 - 56/648 = 1564/648 - After reducing the fraction, the answer is 391/162
- In mixed form: 267/162
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