Answers

Add 84/42 and 20/72

1^st number: 2 0/42, 2^nd number: 20/72

84/42 + 20/72 is 41/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   84/42 = 84 × 12/42 × 12 = 1008/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   20/72 = 20 × 7/72 × 7 = 140/504
4. Add the two like fractions:
   1008/504 + 140/504 = 1008 + 140/504 = 1148/504
5. 1148/504 simplified gives 41/18
6. So, 84/42 + 20/72 = 41/18
   In mixed form: 25/18

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