Answers

Add 18/27 and 90/60

1^st number: 18/27, 2^nd number: 1 30/60

18/27 + 90/60 is 13/6.

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,
   18/27 = 18 × 20/27 × 20 = 360/540
3. Likewise, for the 2nd fraction, since 60 × 9 = 540,
   90/60 = 90 × 9/60 × 9 = 810/540
4. Add the two like fractions:
   360/540 + 810/540 = 360 + 810/540 = 1170/540
5. 1170/540 simplified gives 13/6
6. So, 18/27 + 90/60 = 13/6
   In mixed form: 21/6

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