Subtract 30/18 from 42/54
1st number: 42/54, 2nd number: 1 12/18
42/54 - 30/18 is -8/9.
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,
42/54 = 42 × 1/54 × 1 = 42/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
30/18 = 30 × 3/18 × 3 = 90/54 - Subtract the two like fractions:
42/54 - 90/54 = 42 - 90/54 = -48/54 - After reducing the fraction, the answer is -8/9
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