Answers

Subtract 81/48 from 28/90

1^st number: 28/90, 2^nd number: 1 33/48

28/90 - 81/48 is -991/720.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 48 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   28/90 = 28 × 8/90 × 8 = 224/720
3. Likewise, for the 2nd fraction, since 48 × 15 = 720,
   81/48 = 81 × 15/48 × 15 = 1215/720
4. Subtract the two like fractions:
   224/720 - 1215/720 = 224 - 1215/720 = -991/720

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