Answers

Add 90/60 and 90/18

1^st number: 1 30/60, 2^nd number: 5 0/18

90/60 + 90/18 is 13/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 18 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 60 × 3 = 180,
   90/60 = 90 × 3/60 × 3 = 270/180
3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
   90/18 = 90 × 10/18 × 10 = 900/180
4. Add the two like fractions:
   270/180 + 900/180 = 270 + 900/180 = 1170/180
5. 1170/180 simplified gives 13/2
6. So, 90/60 + 90/18 = 13/2
   In mixed form: 61/2

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