Answers

Subtract 4/90 from 15/4

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

15/4 - 4/90 is 667/180.

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,
   15/4 = 15 × 45/4 × 45 = 675/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   4/90 = 4 × 2/90 × 2 = 8/180
4. Subtract the two like fractions:
   675/180 - 8/180 = 675 - 8/180 = 667/180
5. In mixed form: 3127/180

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