Subtract 81/18 from 45/3
1st number: 15 0/3, 2nd number: 4 9/18
45/3 - 81/18 is 21/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 3 × 6 = 18,
45/3 = 45 × 6/3 × 6 = 270/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
81/18 = 81 × 1/18 × 1 = 81/18 - Subtract the two like fractions:
270/18 - 81/18 = 270 - 81/18 = 189/18 - After reducing the fraction, the answer is 21/2
- In mixed form: 101/2
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