Answers

Subtract 30/42 from 50/75

50/75 - 30/42 is -1/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 42 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 75 × 14 = 1050,
   50/75 = 50 × 14/75 × 14 = 700/1050
3. Likewise, for the 2nd fraction, since 42 × 25 = 1050,
   30/42 = 30 × 25/42 × 25 = 750/1050
4. Subtract the two like fractions:
   700/1050 - 750/1050 = 700 - 750/1050 = -50/1050
5. After reducing the fraction, the answer is -1/21

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