Subtract 30/42 from 8/54
8/54 - 30/42 is -107/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
8/54 = 8 × 7/54 × 7 = 56/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
30/42 = 30 × 9/42 × 9 = 270/378 - Subtract the two like fractions:
56/378 - 270/378 = 56 - 270/378 = -214/378 - After reducing the fraction, the answer is -107/189
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