Subtract 45/3 from 42/54
1st number: 42/54, 2nd number: 15 0/3
42/54 - 45/3 is -128/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 3 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 3 × 18 = 54,
45/3 = 45 × 18/3 × 18 = 810/54 - Subtract the two like fractions:
42/54 - 810/54 = 42 - 810/54 = -768/54 - After reducing the fraction, the answer is -128/9
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