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