Answers

Subtract 70/50 from 25/81

1^st number: 25/81, 2^nd number: 1 20/50

25/81 - 70/50 is -442/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 50 is 4050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4050
2. For the 1st fraction, since 81 × 50 = 4050,
   25/81 = 25 × 50/81 × 50 = 1250/4050
3. Likewise, for the 2nd fraction, since 50 × 81 = 4050,
   70/50 = 70 × 81/50 × 81 = 5670/4050
4. Subtract the two like fractions:
   1250/4050 - 5670/4050 = 1250 - 5670/4050 = -4420/4050
5. After reducing the fraction, the answer is -442/405

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