Subtract 10/12 from 8/42
8/42 - 10/12 is -9/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
8/42 = 8 × 2/42 × 2 = 16/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
10/12 = 10 × 7/12 × 7 = 70/84 - Subtract the two like fractions:
16/84 - 70/84 = 16 - 70/84 = -54/84 - After reducing the fraction, the answer is -9/14
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