Subtract 42/18 from 84/54
1st number: 1 30/54, 2nd number: 2 6/18
84/54 - 42/18 is -7/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
84/54 = 84 × 1/54 × 1 = 84/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
42/18 = 42 × 3/18 × 3 = 126/54 - Subtract the two like fractions:
84/54 - 126/54 = 84 - 126/54 = -42/54 - After reducing the fraction, the answer is -7/9
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