Subtract 42/3 from 21/6
1st number: 3 3/6, 2nd number: 14 0/3
21/6 - 42/3 is -21/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 3 is 6
Next, find the equivalent fraction of both fractional numbers with denominator 6 - For the 1st fraction, since 6 × 1 = 6,
21/6 = 21 × 1/6 × 1 = 21/6 - Likewise, for the 2nd fraction, since 3 × 2 = 6,
42/3 = 42 × 2/3 × 2 = 84/6 - Subtract the two like fractions:
21/6 - 84/6 = 21 - 84/6 = -63/6 - After reducing the fraction, the answer is -21/2
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