Answers

Add 20/10 and 84/72

1^st number: 2 0/10, 2^nd number: 1 12/72

20/10 + 84/72 is 19/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 10 × 36 = 360,
   20/10 = 20 × 36/10 × 36 = 720/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   84/72 = 84 × 5/72 × 5 = 420/360
4. Add the two like fractions:
   720/360 + 420/360 = 720 + 420/360 = 1140/360
5. 1140/360 simplified gives 19/6
6. So, 20/10 + 84/72 = 19/6
   In mixed form: 31/6

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