Subtract 21/27 from 45/18
1st number: 2 9/18, 2nd number: 21/27
45/18 - 21/27 is 31/18.
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,
45/18 = 45 × 3/18 × 3 = 135/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
21/27 = 21 × 2/27 × 2 = 42/54 - Subtract the two like fractions:
135/54 - 42/54 = 135 - 42/54 = 93/54 - After reducing the fraction, the answer is 31/18
- In mixed form: 113/18
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