Answers

Add 70/72 and 80/50

1^st number: 70/72, 2^nd number: 1 30/50

70/72 + 80/50 is 463/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 50 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 72 × 25 = 1800,
   70/72 = 70 × 25/72 × 25 = 1750/1800
3. Likewise, for the 2nd fraction, since 50 × 36 = 1800,
   80/50 = 80 × 36/50 × 36 = 2880/1800
4. Add the two like fractions:
   1750/1800 + 2880/1800 = 1750 + 2880/1800 = 4630/1800
5. 4630/1800 simplified gives 463/180
6. So, 70/72 + 80/50 = 463/180
   In mixed form: 2103/180

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