Answers

Subtract 15/42 from 40/18

1^st number: 2 4/18, 2^nd number: 15/42

40/18 - 15/42 is 235/126.

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,
   40/18 = 40 × 7/18 × 7 = 280/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   15/42 = 15 × 3/42 × 3 = 45/126
4. Subtract the two like fractions:
   280/126 - 45/126 = 280 - 45/126 = 235/126
5. In mixed form: 1109/126

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