Answers

Add 28/64 and 49/20

1^st number: 28/64, 2^nd number: 2 9/20

28/64 + 49/20 is 231/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 20 is 320
   
   Next, find the equivalent fraction of both fractional numbers with denominator 320
2. For the 1st fraction, since 64 × 5 = 320,
   28/64 = 28 × 5/64 × 5 = 140/320
3. Likewise, for the 2nd fraction, since 20 × 16 = 320,
   49/20 = 49 × 16/20 × 16 = 784/320
4. Add the two like fractions:
   140/320 + 784/320 = 140 + 784/320 = 924/320
5. 924/320 simplified gives 231/80
6. So, 28/64 + 49/20 = 231/80
   In mixed form: 271/80

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