Answers

Add 90/45 and 63/4

1^st number: 2 0/45, 2^nd number: 15 3/4

90/45 + 63/4 is 71/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 4 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   90/45 = 90 × 4/45 × 4 = 360/180
3. Likewise, for the 2nd fraction, since 4 × 45 = 180,
   63/4 = 63 × 45/4 × 45 = 2835/180
4. Add the two like fractions:
   360/180 + 2835/180 = 360 + 2835/180 = 3195/180
5. 3195/180 simplified gives 71/4
6. So, 90/45 + 63/4 = 71/4
   In mixed form: 173/4

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