Answers

Add 72/16 and 75/90

1^st number: 4 8/16, 2^nd number: 75/90

72/16 + 75/90 is 16/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 90 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 90 × 8 = 720,
   75/90 = 75 × 8/90 × 8 = 600/720
4. Add the two like fractions:
   3240/720 + 600/720 = 3240 + 600/720 = 3840/720
5. 3840/720 simplified gives 16/3
6. So, 72/16 + 75/90 = 16/3
   In mixed form: 51/3

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