Answers

Subtract 20/50 from 30/72

30/72 - 20/50 is 1/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 50 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 72 × 25 = 1800,
   30/72 = 30 × 25/72 × 25 = 750/1800
3. Likewise, for the 2nd fraction, since 50 × 36 = 1800,
   20/50 = 20 × 36/50 × 36 = 720/1800
4. Subtract the two like fractions:
   750/1800 - 720/1800 = 750 - 720/1800 = 30/1800
5. After reducing the fraction, the answer is 1/60

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