Answers

Subtract 40/42 from 60/18

1^st number: 3 6/18, 2^nd number: 40/42

60/18 - 40/42 is 50/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   60/18 = 60 × 7/18 × 7 = 420/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   40/42 = 40 × 3/42 × 3 = 120/126
4. Subtract the two like fractions:
   420/126 - 120/126 = 420 - 120/126 = 300/126
5. After reducing the fraction, the answer is 50/21
6. In mixed form: 28/21

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