Subtract 30/81 from 40/25
1st number: 1 15/25, 2nd number: 30/81
40/25 - 30/81 is 166/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 25 × 81 = 2025,
40/25 = 40 × 81/25 × 81 = 3240/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
30/81 = 30 × 25/81 × 25 = 750/2025 - Subtract the two like fractions:
3240/2025 - 750/2025 = 3240 - 750/2025 = 2490/2025 - After reducing the fraction, the answer is 166/135
- In mixed form: 131/135
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