Answers

Subtract 40/20 from 42/16

1^st number: 2 10/16, 2^nd number: 2 0/20

42/16 - 40/20 is 5/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 16 × 5 = 80,
   42/16 = 42 × 5/16 × 5 = 210/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   40/20 = 40 × 4/20 × 4 = 160/80
4. Subtract the two like fractions:
   210/80 - 160/80 = 210 - 160/80 = 50/80
5. After reducing the fraction, the answer is 5/8

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