Subtract 40/42 from 8/24
8/24 - 40/42 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
8/24 = 8 × 7/24 × 7 = 56/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
40/42 = 40 × 4/42 × 4 = 160/168 - Subtract the two like fractions:
56/168 - 160/168 = 56 - 160/168 = -104/168 - After reducing the fraction, the answer is -13/21
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