Subtract 72/42 from 1/27
1st number: 1/27, 2nd number: 1 30/42
1/27 - 72/42 is -317/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
1/27 = 1 × 14/27 × 14 = 14/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
72/42 = 72 × 9/42 × 9 = 648/378 - Subtract the two like fractions:
14/378 - 648/378 = 14 - 648/378 = -634/378 - After reducing the fraction, the answer is -317/189
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