Answers

Add 84/4 and 60/45

1^st number: 21 0/4, 2^nd number: 1 15/45

84/4 + 60/45 is 67/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 4 × 45 = 180,
   84/4 = 84 × 45/4 × 45 = 3780/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   60/45 = 60 × 4/45 × 4 = 240/180
4. Add the two like fractions:
   3780/180 + 240/180 = 3780 + 240/180 = 4020/180
5. 4020/180 simplified gives 67/3
6. So, 84/4 + 60/45 = 67/3
   In mixed form: 221/3

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