Answers

Add 24/21 and 84/90

1^st number: 1 3/21, 2^nd number: 84/90

24/21 + 84/90 is 218/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 21 × 30 = 630,
   24/21 = 24 × 30/21 × 30 = 720/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   84/90 = 84 × 7/90 × 7 = 588/630
4. Add the two like fractions:
   720/630 + 588/630 = 720 + 588/630 = 1308/630
5. 1308/630 simplified gives 218/105
6. So, 24/21 + 84/90 = 218/105
   In mixed form: 28/105

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