Answers

Subtract 90/16 from 50/20

1^st number: 2 10/20, 2^nd number: 5 10/16

50/20 - 90/16 is -25/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   50/20 = 50 × 4/20 × 4 = 200/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   90/16 = 90 × 5/16 × 5 = 450/80
4. Subtract the two like fractions:
   200/80 - 450/80 = 200 - 450/80 = -250/80
5. After reducing the fraction, the answer is -25/8

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