Answers

Subtract 8/20 from 42/16

1^st number: 2 10/16, 2^nd number: 8/20

42/16 - 8/20 is 89/40.

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,
   8/20 = 8 × 4/20 × 4 = 32/80
4. Subtract the two like fractions:
   210/80 - 32/80 = 210 - 32/80 = 178/80
5. After reducing the fraction, the answer is 89/40
6. In mixed form: 29/40

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