Answers

Add 84/18 and 60/72

1^st number: 4 12/18, 2^nd number: 60/72

84/18 + 60/72 is 11/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 18 × 4 = 72,
   84/18 = 84 × 4/18 × 4 = 336/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   60/72 = 60 × 1/72 × 1 = 60/72
4. Add the two like fractions:
   336/72 + 60/72 = 336 + 60/72 = 396/72
5. 396/72 simplified gives 11/2
6. So, 84/18 + 60/72 = 11/2
   In mixed form: 51/2

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