Subtract 81/40 from 40/25
1st number: 1 15/25, 2nd number: 2 1/40
40/25 - 81/40 is -17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 40 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 25 × 8 = 200,
40/25 = 40 × 8/25 × 8 = 320/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
81/40 = 81 × 5/40 × 5 = 405/200 - Subtract the two like fractions:
320/200 - 405/200 = 320 - 405/200 = -85/200 - After reducing the fraction, the answer is -17/40
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