Subtract 81/36 from 21/25
1st number: 21/25, 2nd number: 2 9/36
21/25 - 81/36 is -141/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 36 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 25 × 36 = 900,
21/25 = 21 × 36/25 × 36 = 756/900 - Likewise, for the 2nd fraction, since 36 × 25 = 900,
81/36 = 81 × 25/36 × 25 = 2025/900 - Subtract the two like fractions:
756/900 - 2025/900 = 756 - 2025/900 = -1269/900 - After reducing the fraction, the answer is -141/100
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