Answers

Subtract 20/60 from 16/21

16/21 - 20/60 is 3/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   16/21 = 16 × 20/21 × 20 = 320/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   20/60 = 20 × 7/60 × 7 = 140/420
4. Subtract the two like fractions:
   320/420 - 140/420 = 320 - 140/420 = 180/420
5. After reducing the fraction, the answer is 3/7

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