Answers

Subtract 9/4 from 84/90

1^st number: 84/90, 2^nd number: 2 1/4

84/90 - 9/4 is -79/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 4 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   84/90 = 84 × 2/90 × 2 = 168/180
3. Likewise, for the 2nd fraction, since 4 × 45 = 180,
   9/4 = 9 × 45/4 × 45 = 405/180
4. Subtract the two like fractions:
   168/180 - 405/180 = 168 - 405/180 = -237/180
5. After reducing the fraction, the answer is -79/60

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