Answers

Subtract 20/81 from 70/45

1^st number: 1 25/45, 2^nd number: 20/81

70/45 - 20/81 is 106/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 45 × 9 = 405,
   70/45 = 70 × 9/45 × 9 = 630/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   20/81 = 20 × 5/81 × 5 = 100/405
4. Subtract the two like fractions:
   630/405 - 100/405 = 630 - 100/405 = 530/405
5. After reducing the fraction, the answer is 106/81
6. In mixed form: 125/81

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