Subtract 81/36 from 42/12
1st number: 3 6/12, 2nd number: 2 9/36
42/12 - 81/36 is 5/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
42/12 = 42 × 3/12 × 3 = 126/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
81/36 = 81 × 1/36 × 1 = 81/36 - Subtract the two like fractions:
126/36 - 81/36 = 126 - 81/36 = 45/36 - After reducing the fraction, the answer is 5/4
- In mixed form: 11/4
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