Answers

Add 90/40 and 12/16

1^st number: 2 10/40, 2^nd number: 12/16

90/40 + 12/16 is 3/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 40 × 2 = 80,
   90/40 = 90 × 2/40 × 2 = 180/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   12/16 = 12 × 5/16 × 5 = 60/80
4. Add the two like fractions:
   180/80 + 60/80 = 180 + 60/80 = 240/80
5. 240/80 simplified gives 3/1
6. So, 90/40 + 12/16 = 3/1

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