Subtract 84/54 from 5/42
1st number: 5/42, 2nd number: 1 30/54
5/42 - 84/54 is -181/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
5/42 = 5 × 9/42 × 9 = 45/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
84/54 = 84 × 7/54 × 7 = 588/378 - Subtract the two like fractions:
45/378 - 588/378 = 45 - 588/378 = -543/378 - After reducing the fraction, the answer is -181/126
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