Subtract 81/12 from 42/56
1st number: 42/56, 2nd number: 6 9/12
42/56 - 81/12 is -6/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 12 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Likewise, for the 2nd fraction, since 12 × 14 = 168,
81/12 = 81 × 14/12 × 14 = 1134/168 - Subtract the two like fractions:
126/168 - 1134/168 = 126 - 1134/168 = -1008/168 - After reducing the fraction, the answer is -6/1
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