Answers

Subtract 7/81 from 45/27

1^st number: 1 18/27, 2^nd number: 7/81

45/27 - 7/81 is 128/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 81 is 81
   
   Next, find the equivalent fraction of both fractional numbers with denominator 81
2. For the 1st fraction, since 27 × 3 = 81,
   45/27 = 45 × 3/27 × 3 = 135/81
3. Likewise, for the 2nd fraction, since 81 × 1 = 81,
   7/81 = 7 × 1/81 × 1 = 7/81
4. Subtract the two like fractions:
   135/81 - 7/81 = 135 - 7/81 = 128/81
5. In mixed form: 147/81

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