Answers

Add 84/72 and 63/20

1^st number: 1 12/72, 2^nd number: 3 3/20

84/72 + 63/20 is 259/60.

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,
   63/20 = 63 × 18/20 × 18 = 1134/360
4. Add the two like fractions:
   420/360 + 1134/360 = 420 + 1134/360 = 1554/360
5. 1554/360 simplified gives 259/60
6. So, 84/72 + 63/20 = 259/60
   In mixed form: 419/60

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