Answers

Add 80/50 and 20/72

1^st number: 1 30/50, 2^nd number: 20/72

80/50 + 20/72 is 169/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 72 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 50 × 36 = 1800,
   80/50 = 80 × 36/50 × 36 = 2880/1800
3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
   20/72 = 20 × 25/72 × 25 = 500/1800
4. Add the two like fractions:
   2880/1800 + 500/1800 = 2880 + 500/1800 = 3380/1800
5. 3380/1800 simplified gives 169/90
6. So, 80/50 + 20/72 = 169/90
   In mixed form: 179/90

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