Subtract 24/63 from 20/54
20/54 - 24/63 is -2/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Likewise, for the 2nd fraction, since 63 × 6 = 378,
24/63 = 24 × 6/63 × 6 = 144/378 - Subtract the two like fractions:
140/378 - 144/378 = 140 - 144/378 = -4/378 - After reducing the fraction, the answer is -2/189
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