Answers

Add 90/21 and 8/9

1^st number: 4 6/21, 2^nd number: 8/9

90/21 + 8/9 is 326/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 9 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 21 × 3 = 63,
   90/21 = 90 × 3/21 × 3 = 270/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   8/9 = 8 × 7/9 × 7 = 56/63
4. Add the two like fractions:
   270/63 + 56/63 = 270 + 56/63 = 326/63
5. So, 90/21 + 8/9 = 326/63
   In mixed form: 511/63

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