Answers

Subtract 81/90 from 8/4

1^st number: 2 0/4, 2^nd number: 81/90

8/4 - 81/90 is 11/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 4 × 45 = 180,
   8/4 = 8 × 45/4 × 45 = 360/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   81/90 = 81 × 2/90 × 2 = 162/180
4. Subtract the two like fractions:
   360/180 - 162/180 = 360 - 162/180 = 198/180
5. After reducing the fraction, the answer is 11/10
6. In mixed form: 11/10

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