Subtract 21/9 from 18/36
1st number: 18/36, 2nd number: 2 3/9
18/36 - 21/9 is -11/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
18/36 = 18 × 1/36 × 1 = 18/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36 - Subtract the two like fractions:
18/36 - 84/36 = 18 - 84/36 = -66/36 - After reducing the fraction, the answer is -11/6
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