Answers

Add 63/84 and 81/45

1^st number: 63/84, 2^nd number: 1 36/45

63/84 + 81/45 is 51/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 45 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   63/84 = 63 × 15/84 × 15 = 945/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   81/45 = 81 × 28/45 × 28 = 2268/1260
4. Add the two like fractions:
   945/1260 + 2268/1260 = 945 + 2268/1260 = 3213/1260
5. 3213/1260 simplified gives 51/20
6. So, 63/84 + 81/45 = 51/20
   In mixed form: 211/20

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