Subtract 18/45 from 81/15
1st number: 5 6/15, 2nd number: 18/45
81/15 - 18/45 is 5/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
81/15 = 81 × 3/15 × 3 = 243/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
18/45 = 18 × 1/45 × 1 = 18/45 - Subtract the two like fractions:
243/45 - 18/45 = 243 - 18/45 = 225/45 - After reducing the fraction, the answer is 5/1
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