Subtract 40/8 from 49/81
1st number: 49/81, 2nd number: 5 0/8
49/81 - 40/8 is -356/81.
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,
49/81 = 49 × 8/81 × 8 = 392/648 - Likewise, for the 2nd fraction, since 8 × 81 = 648,
40/8 = 40 × 81/8 × 81 = 3240/648 - Subtract the two like fractions:
392/648 - 3240/648 = 392 - 3240/648 = -2848/648 - After reducing the fraction, the answer is -356/81
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