Subtract 3/12 from 42/2
1st number: 21 0/2, 2nd number: 3/12
42/2 - 3/12 is 83/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
42/2 = 42 × 6/2 × 6 = 252/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
3/12 = 3 × 1/12 × 1 = 3/12 - Subtract the two like fractions:
252/12 - 3/12 = 252 - 3/12 = 249/12 - After reducing the fraction, the answer is 83/4
- In mixed form: 203/4
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