Answers

Subtract 9/8 from 90/4

1^st number: 22 2/4, 2^nd number: 1 1/8

90/4 - 9/8 is 171/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 8 is 8
   
   Next, find the equivalent fraction of both fractional numbers with denominator 8
2. For the 1st fraction, since 4 × 2 = 8,
   90/4 = 90 × 2/4 × 2 = 180/8
3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
   9/8 = 9 × 1/8 × 1 = 9/8
4. Subtract the two like fractions:
   180/8 - 9/8 = 180 - 9/8 = 171/8
5. In mixed form: 213/8

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