Subtract 42/12 from 21/2
1st number: 10 1/2, 2nd number: 3 6/12
21/2 - 42/12 is 7/1.
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,
21/2 = 21 × 6/2 × 6 = 126/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
42/12 = 42 × 1/12 × 1 = 42/12 - Subtract the two like fractions:
126/12 - 42/12 = 126 - 42/12 = 84/12 - After reducing the fraction, the answer is 7/1
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