Subtract 21/3 from 18/54
1st number: 18/54, 2nd number: 7 0/3
18/54 - 21/3 is -20/3.
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,
18/54 = 18 × 1/54 × 1 = 18/54 - Likewise, for the 2nd fraction, since 3 × 18 = 54,
21/3 = 21 × 18/3 × 18 = 378/54 - Subtract the two like fractions:
18/54 - 378/54 = 18 - 378/54 = -360/54 - After reducing the fraction, the answer is -20/3
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