Answers

Subtract 21/6 from 16/90

1^st number: 16/90, 2^nd number: 3 3/6

16/90 - 21/6 is -299/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 6 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   16/90 = 16 × 1/90 × 1 = 16/90
3. Likewise, for the 2nd fraction, since 6 × 15 = 90,
   21/6 = 21 × 15/6 × 15 = 315/90
4. Subtract the two like fractions:
   16/90 - 315/90 = 16 - 315/90 = -299/90

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