Answers

Subtract 50/18 from 72/42

1^st number: 1 30/42, 2^nd number: 2 14/18

72/42 - 50/18 is -67/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   72/42 = 72 × 3/42 × 3 = 216/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   50/18 = 50 × 7/18 × 7 = 350/126
4. Subtract the two like fractions:
   216/126 - 350/126 = 216 - 350/126 = -134/126
5. After reducing the fraction, the answer is -67/63

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