Subtract 81/18 from 1/2
1st number: 1/2, 2nd number: 4 9/18
1/2 - 81/18 is -4/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
1/2 = 1 × 9/2 × 9 = 9/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
81/18 = 81 × 1/18 × 1 = 81/18 - Subtract the two like fractions:
9/18 - 81/18 = 9 - 81/18 = -72/18 - After reducing the fraction, the answer is -4/1
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