Answers

Add 64/54 and 98/20

1^st number: 1 10/54, 2^nd number: 4 18/20

64/54 + 98/20 is 1643/270.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 20 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 54 × 10 = 540,
   64/54 = 64 × 10/54 × 10 = 640/540
3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
   98/20 = 98 × 27/20 × 27 = 2646/540
4. Add the two like fractions:
   640/540 + 2646/540 = 640 + 2646/540 = 3286/540
5. 3286/540 simplified gives 1643/270
6. So, 64/54 + 98/20 = 1643/270
   In mixed form: 623/270

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