Answers

Add 80/30 and 81/72

1^st number: 2 20/30, 2^nd number: 1 9/72

80/30 + 81/72 is 91/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 30 × 12 = 360,
   80/30 = 80 × 12/30 × 12 = 960/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   81/72 = 81 × 5/72 × 5 = 405/360
4. Add the two like fractions:
   960/360 + 405/360 = 960 + 405/360 = 1365/360
5. 1365/360 simplified gives 91/24
6. So, 80/30 + 81/72 = 91/24
   In mixed form: 319/24

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