Answers

Add 84/72 and 8/20

1^st number: 1 12/72, 2^nd number: 8/20

84/72 + 8/20 is 47/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 20 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   84/72 = 84 × 5/72 × 5 = 420/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   8/20 = 8 × 18/20 × 18 = 144/360
4. Add the two like fractions:
   420/360 + 144/360 = 420 + 144/360 = 564/360
5. 564/360 simplified gives 47/30
6. So, 84/72 + 8/20 = 47/30
   In mixed form: 117/30

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