Answers

Add 28/84 and 60/63

28/84 + 60/63 is 9/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 84 × 3 = 252,
   28/84 = 28 × 3/84 × 3 = 84/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   60/63 = 60 × 4/63 × 4 = 240/252
4. Add the two like fractions:
   84/252 + 240/252 = 84 + 240/252 = 324/252
5. 324/252 simplified gives 9/7
6. So, 28/84 + 60/63 = 9/7
   In mixed form: 12/7

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