Answers

Add 30/90 and 45/20

1^st number: 30/90, 2^nd number: 2 5/20

30/90 + 45/20 is 31/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   30/90 = 30 × 2/90 × 2 = 60/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   45/20 = 45 × 9/20 × 9 = 405/180
4. Add the two like fractions:
   60/180 + 405/180 = 60 + 405/180 = 465/180
5. 465/180 simplified gives 31/12
6. So, 30/90 + 45/20 = 31/12
   In mixed form: 27/12

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