Answers

Subtract 30/90 from 21/16

1^st number: 1 5/16, 2^nd number: 30/90

21/16 - 30/90 is 47/48.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 90 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 16 × 45 = 720,
   21/16 = 21 × 45/16 × 45 = 945/720
3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
   30/90 = 30 × 8/90 × 8 = 240/720
4. Subtract the two like fractions:
   945/720 - 240/720 = 945 - 240/720 = 705/720
5. After reducing the fraction, the answer is 47/48

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