Subtract 24/27 from 9/42
9/42 - 24/27 is -85/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
9/42 = 9 × 9/42 × 9 = 81/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
24/27 = 24 × 14/27 × 14 = 336/378 - Subtract the two like fractions:
81/378 - 336/378 = 81 - 336/378 = -255/378 - After reducing the fraction, the answer is -85/126
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