Answers

Add 7/21 and 90/64

1^st number: 7/21, 2^nd number: 1 26/64

7/21 + 90/64 is 167/96.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 64 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 21 × 64 = 1344,
   7/21 = 7 × 64/21 × 64 = 448/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   90/64 = 90 × 21/64 × 21 = 1890/1344
4. Add the two like fractions:
   448/1344 + 1890/1344 = 448 + 1890/1344 = 2338/1344
5. 2338/1344 simplified gives 167/96
6. So, 7/21 + 90/64 = 167/96
   In mixed form: 171/96

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