Subtract 36/27 from 21/18
1st number: 1 3/18, 2nd number: 1 9/27
21/18 - 36/27 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
21/18 = 21 × 3/18 × 3 = 63/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
36/27 = 36 × 2/27 × 2 = 72/54 - Subtract the two like fractions:
63/54 - 72/54 = 63 - 72/54 = -9/54 - After reducing the fraction, the answer is -1/6
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