Answers

Subtract 45/81 from 60/42

1^st number: 1 18/42, 2^nd number: 45/81

60/42 - 45/81 is 55/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 81 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 42 × 27 = 1134,
   60/42 = 60 × 27/42 × 27 = 1620/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   45/81 = 45 × 14/81 × 14 = 630/1134
4. Subtract the two like fractions:
   1620/1134 - 630/1134 = 1620 - 630/1134 = 990/1134
5. After reducing the fraction, the answer is 55/63

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