Answers

Subtract 15/50 from 20/42

20/42 - 15/50 is 37/210.

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,
   20/42 = 20 × 25/42 × 25 = 500/1050
3. Likewise, for the 2nd fraction, since 50 × 21 = 1050,
   15/50 = 15 × 21/50 × 21 = 315/1050
4. Subtract the two like fractions:
   500/1050 - 315/1050 = 500 - 315/1050 = 185/1050
5. After reducing the fraction, the answer is 37/210

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