Subtract 21/18 from 1/12
1st number: 1/12, 2nd number: 1 3/18
1/12 - 21/18 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
1/12 = 1 × 3/12 × 3 = 3/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Subtract the two like fractions:
3/36 - 42/36 = 3 - 42/36 = -39/36 - After reducing the fraction, the answer is -13/12
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