Answers

Subtract 21/16 from 90/25

1^st number: 3 15/25, 2^nd number: 1 5/16

90/25 - 21/16 is 183/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 16 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 25 × 16 = 400,
   90/25 = 90 × 16/25 × 16 = 1440/400
3. Likewise, for the 2nd fraction, since 16 × 25 = 400,
   21/16 = 21 × 25/16 × 25 = 525/400
4. Subtract the two like fractions:
   1440/400 - 525/400 = 1440 - 525/400 = 915/400
5. After reducing the fraction, the answer is 183/80
6. In mixed form: 223/80

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