Subtract 81/16 from 30/40
1st number: 30/40, 2nd number: 5 1/16
30/40 - 81/16 is -69/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
30/40 = 30 × 2/40 × 2 = 60/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
81/16 = 81 × 5/16 × 5 = 405/80 - Subtract the two like fractions:
60/80 - 405/80 = 60 - 405/80 = -345/80 - After reducing the fraction, the answer is -69/16
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