Answers

Add 84/12 and 20/72

1^st number: 7 0/12, 2^nd number: 20/72

84/12 + 20/72 is 131/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 12 × 6 = 72,
   84/12 = 84 × 6/12 × 6 = 504/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   20/72 = 20 × 1/72 × 1 = 20/72
4. Add the two like fractions:
   504/72 + 20/72 = 504 + 20/72 = 524/72
5. 524/72 simplified gives 131/18
6. So, 84/12 + 20/72 = 131/18
   In mixed form: 75/18

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