Subtract 42/9 from 21/6
1st number: 3 3/6, 2nd number: 4 6/9
21/6 - 42/9 is -7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
21/6 = 21 × 3/6 × 3 = 63/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
42/9 = 42 × 2/9 × 2 = 84/18 - Subtract the two like fractions:
63/18 - 84/18 = 63 - 84/18 = -21/18 - After reducing the fraction, the answer is -7/6
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