Answers

Add 72/16 and 90/45

1^st number: 4 8/16, 2^nd number: 2 0/45

72/16 + 90/45 is 13/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 45 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 16 × 45 = 720,
   72/16 = 72 × 45/16 × 45 = 3240/720
3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
   90/45 = 90 × 16/45 × 16 = 1440/720
4. Add the two like fractions:
   3240/720 + 1440/720 = 3240 + 1440/720 = 4680/720
5. 4680/720 simplified gives 13/2
6. So, 72/16 + 90/45 = 13/2
   In mixed form: 61/2

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