Subtract 45/12 from 40/56
1st number: 40/56, 2nd number: 3 9/12
40/56 - 45/12 is -85/28.
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,
40/56 = 40 × 3/56 × 3 = 120/168 - Likewise, for the 2nd fraction, since 12 × 14 = 168,
45/12 = 45 × 14/12 × 14 = 630/168 - Subtract the two like fractions:
120/168 - 630/168 = 120 - 630/168 = -510/168 - After reducing the fraction, the answer is -85/28
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