Answers

Subtract 50/42 from 50/72

1^st number: 50/72, 2^nd number: 1 8/42

50/72 - 50/42 is -125/252.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 42 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   50/72 = 50 × 7/72 × 7 = 350/504
3. Likewise, for the 2nd fraction, since 42 × 12 = 504,
   50/42 = 50 × 12/42 × 12 = 600/504
4. Subtract the two like fractions:
   350/504 - 600/504 = 350 - 600/504 = -250/504
5. After reducing the fraction, the answer is -125/252

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