Answers

Add 40/16 and 90/63

1^st number: 2 8/16, 2^nd number: 1 27/63

40/16 + 90/63 is 55/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 63 is 1008
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1008
2. For the 1st fraction, since 16 × 63 = 1008,
   40/16 = 40 × 63/16 × 63 = 2520/1008
3. Likewise, for the 2nd fraction, since 63 × 16 = 1008,
   90/63 = 90 × 16/63 × 16 = 1440/1008
4. Add the two like fractions:
   2520/1008 + 1440/1008 = 2520 + 1440/1008 = 3960/1008
5. 3960/1008 simplified gives 55/14
6. So, 40/16 + 90/63 = 55/14
   In mixed form: 313/14

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