Subtract 42/7 from 20/54
1st number: 20/54, 2nd number: 6 0/7
20/54 - 42/7 is -152/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 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 7 × 54 = 378,
42/7 = 42 × 54/7 × 54 = 2268/378 - Subtract the two like fractions:
140/378 - 2268/378 = 140 - 2268/378 = -2128/378 - After reducing the fraction, the answer is -152/27
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