Answers

Add 84/21 and 35/90

1^st number: 4 0/21, 2^nd number: 35/90

84/21 + 35/90 is 79/18.

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,
   84/21 = 84 × 30/21 × 30 = 2520/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   35/90 = 35 × 7/90 × 7 = 245/630
4. Add the two like fractions:
   2520/630 + 245/630 = 2520 + 245/630 = 2765/630
5. 2765/630 simplified gives 79/18
6. So, 84/21 + 35/90 = 79/18
   In mixed form: 47/18

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