Answers

Add 80/45 and 54/16

1^st number: 1 35/45, 2^nd number: 3 6/16

80/45 + 54/16 is 371/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 16 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   80/45 = 80 × 16/45 × 16 = 1280/720
3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
   54/16 = 54 × 45/16 × 45 = 2430/720
4. Add the two like fractions:
   1280/720 + 2430/720 = 1280 + 2430/720 = 3710/720
5. 3710/720 simplified gives 371/72
6. So, 80/45 + 54/16 = 371/72
   In mixed form: 511/72

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