Subtract 30/81 from 12/8
1st number: 1 4/8, 2nd number: 30/81
12/8 - 30/81 is 61/54.
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,
12/8 = 12 × 81/8 × 81 = 972/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
30/81 = 30 × 8/81 × 8 = 240/648 - Subtract the two like fractions:
972/648 - 240/648 = 972 - 240/648 = 732/648 - After reducing the fraction, the answer is 61/54
- In mixed form: 17/54
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