Answers

Add 80/45 and 10/72

1^st number: 1 35/45, 2^nd number: 10/72

80/45 + 10/72 is 23/12.

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,
   10/72 = 10 × 5/72 × 5 = 50/360
4. Add the two like fractions:
   640/360 + 50/360 = 640 + 50/360 = 690/360
5. 690/360 simplified gives 23/12
6. So, 80/45 + 10/72 = 23/12
   In mixed form: 111/12

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