Answers

Subtract 72/18 from 50/84

1^st number: 50/84, 2^nd number: 4 0/18

50/84 - 72/18 is -143/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 18 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   50/84 = 50 × 3/84 × 3 = 150/252
3. Likewise, for the 2nd fraction, since 18 × 14 = 252,
   72/18 = 72 × 14/18 × 14 = 1008/252
4. Subtract the two like fractions:
   150/252 - 1008/252 = 150 - 1008/252 = -858/252
5. After reducing the fraction, the answer is -143/42

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