Answers

Add 80/45 and 84/72

1^st number: 1 35/45, 2^nd number: 1 12/72

80/45 + 84/72 is 53/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 45 × 8 = 360,
   80/45 = 80 × 8/45 × 8 = 640/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   84/72 = 84 × 5/72 × 5 = 420/360
4. Add the two like fractions:
   640/360 + 420/360 = 640 + 420/360 = 1060/360
5. 1060/360 simplified gives 53/18
6. So, 80/45 + 84/72 = 53/18
   In mixed form: 217/18

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