Answers

Subtract 90/32 from 28/15

1^st number: 1 13/15, 2^nd number: 2 26/32

28/15 - 90/32 is -227/240.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 32 is 480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 480
2. For the 1st fraction, since 15 × 32 = 480,
   28/15 = 28 × 32/15 × 32 = 896/480
3. Likewise, for the 2nd fraction, since 32 × 15 = 480,
   90/32 = 90 × 15/32 × 15 = 1350/480
4. Subtract the two like fractions:
   896/480 - 1350/480 = 896 - 1350/480 = -454/480
5. After reducing the fraction, the answer is -227/240

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