Answers

Add 28/27 and 18/60

1^st number: 1 1/27, 2^nd number: 18/60

28/27 + 18/60 is 361/270.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 60 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 27 × 20 = 540,
   28/27 = 28 × 20/27 × 20 = 560/540
3. Likewise, for the 2nd fraction, since 60 × 9 = 540,
   18/60 = 18 × 9/60 × 9 = 162/540
4. Add the two like fractions:
   560/540 + 162/540 = 560 + 162/540 = 722/540
5. 722/540 simplified gives 361/270
6. So, 28/27 + 18/60 = 361/270
   In mixed form: 191/270

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