Subtract 81/40 from 30/12
1st number: 2 6/12, 2nd number: 2 1/40
30/12 - 81/40 is 19/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
30/12 = 30 × 10/12 × 10 = 300/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
81/40 = 81 × 3/40 × 3 = 243/120 - Subtract the two like fractions:
300/120 - 243/120 = 300 - 243/120 = 57/120 - After reducing the fraction, the answer is 19/40
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