Answers

Add 90/21 and 90/64

1^st number: 4 6/21, 2^nd number: 1 26/64

90/21 + 90/64 is 1275/224.

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,
   90/21 = 90 × 64/21 × 64 = 5760/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   90/64 = 90 × 21/64 × 21 = 1890/1344
4. Add the two like fractions:
   5760/1344 + 1890/1344 = 5760 + 1890/1344 = 7650/1344
5. 7650/1344 simplified gives 1275/224
6. So, 90/21 + 90/64 = 1275/224
   In mixed form: 5155/224

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