Answers

Add 28/4 and 45/90

1^st number: 7 0/4, 2^nd number: 45/90

28/4 + 45/90 is 15/2.

Steps for adding 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,
   28/4 = 28 × 45/4 × 45 = 1260/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   45/90 = 45 × 2/90 × 2 = 90/180
4. Add the two like fractions:
   1260/180 + 90/180 = 1260 + 90/180 = 1350/180
5. 1350/180 simplified gives 15/2
6. So, 28/4 + 45/90 = 15/2
   In mixed form: 71/2

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