Answers

Add 90/16 and 45/20

1^st number: 5 10/16, 2^nd number: 2 5/20

90/16 + 45/20 is 63/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 16 × 5 = 80,
   90/16 = 90 × 5/16 × 5 = 450/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   45/20 = 45 × 4/20 × 4 = 180/80
4. Add the two like fractions:
   450/80 + 180/80 = 450 + 180/80 = 630/80
5. 630/80 simplified gives 63/8
6. So, 90/16 + 45/20 = 63/8
   In mixed form: 77/8

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