Answers

Subtract 70/45 from 40/81

1^st number: 40/81, 2^nd number: 1 25/45

40/81 - 70/45 is -86/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 45 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 81 × 5 = 405,
   40/81 = 40 × 5/81 × 5 = 200/405
3. Likewise, for the 2nd fraction, since 45 × 9 = 405,
   70/45 = 70 × 9/45 × 9 = 630/405
4. Subtract the two like fractions:
   200/405 - 630/405 = 200 - 630/405 = -430/405
5. After reducing the fraction, the answer is -86/81

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