Answers

Subtract 2/90 from 63/4

1^st number: 15 3/4, 2^nd number: 2/90

63/4 - 2/90 is 2831/180.

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,
   63/4 = 63 × 45/4 × 45 = 2835/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   2/90 = 2 × 2/90 × 2 = 4/180
4. Subtract the two like fractions:
   2835/180 - 4/180 = 2835 - 4/180 = 2831/180
5. In mixed form: 15131/180

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