Subtract 30/20 from 81/2
1st number: 40 1/2, 2nd number: 1 10/20
81/2 - 30/20 is 39/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
81/2 = 81 × 10/2 × 10 = 810/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
30/20 = 30 × 1/20 × 1 = 30/20 - Subtract the two like fractions:
810/20 - 30/20 = 810 - 30/20 = 780/20 - After reducing the fraction, the answer is 39/1
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