Subtract 36/40 from 81/4
1st number: 20 1/4, 2nd number: 36/40
81/4 - 36/40 is 387/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
81/4 = 81 × 10/4 × 10 = 810/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
36/40 = 36 × 1/40 × 1 = 36/40 - Subtract the two like fractions:
810/40 - 36/40 = 810 - 36/40 = 774/40 - After reducing the fraction, the answer is 387/20
- In mixed form: 197/20
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