Subtract 15/54 from 42/2
1st number: 21 0/2, 2nd number: 15/54
42/2 - 15/54 is 373/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 2 × 27 = 54,
42/2 = 42 × 27/2 × 27 = 1134/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
15/54 = 15 × 1/54 × 1 = 15/54 - Subtract the two like fractions:
1134/54 - 15/54 = 1134 - 15/54 = 1119/54 - After reducing the fraction, the answer is 373/18
- In mixed form: 2013/18
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