Subtract 21/12 from 18/6
1st number: 3 0/6, 2nd number: 1 9/12
18/6 - 21/12 is 5/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
18/6 = 18 × 2/6 × 2 = 36/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
21/12 = 21 × 1/12 × 1 = 21/12 - Subtract the two like fractions:
36/12 - 21/12 = 36 - 21/12 = 15/12 - After reducing the fraction, the answer is 5/4
- In mixed form: 11/4
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