Answers

Subtract 72/50 from 5/42

1^st number: 5/42, 2^nd number: 1 22/50

5/42 - 72/50 is -1387/1050.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 50 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 42 × 25 = 1050,
   5/42 = 5 × 25/42 × 25 = 125/1050
3. Likewise, for the 2nd fraction, since 50 × 21 = 1050,
   72/50 = 72 × 21/50 × 21 = 1512/1050
4. Subtract the two like fractions:
   125/1050 - 1512/1050 = 125 - 1512/1050 = -1387/1050

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