Subtract 81/18 from 18/25
1st number: 18/25, 2nd number: 4 9/18
18/25 - 81/18 is -189/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
18/25 = 18 × 18/25 × 18 = 324/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
81/18 = 81 × 25/18 × 25 = 2025/450 - Subtract the two like fractions:
324/450 - 2025/450 = 324 - 2025/450 = -1701/450 - After reducing the fraction, the answer is -189/50
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