Subtract 45/15 from 81/12
1st number: 6 9/12, 2nd number: 3 0/15
81/12 - 45/15 is 15/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
81/12 = 81 × 5/12 × 5 = 405/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
45/15 = 45 × 4/15 × 4 = 180/60 - Subtract the two like fractions:
405/60 - 180/60 = 405 - 180/60 = 225/60 - After reducing the fraction, the answer is 15/4
- In mixed form: 33/4
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