Subtract 81/30 from 5/2
1st number: 2 1/2, 2nd number: 2 21/30
5/2 - 81/30 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
5/2 = 5 × 15/2 × 15 = 75/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Subtract the two like fractions:
75/30 - 81/30 = 75 - 81/30 = -6/30 - After reducing the fraction, the answer is -1/5
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