Subtract 24/42 from 15/84
15/84 - 24/42 is -11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
24/42 = 24 × 2/42 × 2 = 48/84 - Subtract the two like fractions:
15/84 - 48/84 = 15 - 48/84 = -33/84 - After reducing the fraction, the answer is -11/28
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