Answers

Add 20/84 and 84/45

1^st number: 20/84, 2^nd number: 1 39/45

20/84 + 84/45 is 221/105.

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,
   20/84 = 20 × 15/84 × 15 = 300/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   84/45 = 84 × 28/45 × 28 = 2352/1260
4. Add the two like fractions:
   300/1260 + 2352/1260 = 300 + 2352/1260 = 2652/1260
5. 2652/1260 simplified gives 221/105
6. So, 20/84 + 84/45 = 221/105
   In mixed form: 211/105

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