Subtract 25/8 from 10/81
1st number: 10/81, 2nd number: 3 1/8
10/81 - 25/8 is -1945/648.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 8 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
10/81 = 10 × 8/81 × 8 = 80/648 - Likewise, for the 2nd fraction, since 8 × 81 = 648,
25/8 = 25 × 81/8 × 81 = 2025/648 - Subtract the two like fractions:
80/648 - 2025/648 = 80 - 2025/648 = -1945/648
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