Answers

Add 84/21 and 35/9

1^st number: 4 0/21, 2^nd number: 3 8/9

84/21 + 35/9 is 71/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 9 is 63
2. For the 1st fraction, since 21 × 3 = 63,
   84/21 = 84 × 3/21 × 3 = 252/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   35/9 = 35 × 7/9 × 7 = 245/63
4. Add the two fractions:
   252/63 + 245/63 = 252 + 245/63 = 497/63
5. 497/63 simplified gives 71/9
6. So, 84/21 + 35/9 = 71/9
   In mixed form: 78/9

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