Answers

Add 20/90 and 45/30

1^st number: 20/90, 2^nd number: 1 15/30

20/90 + 45/30 is 31/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 30 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   20/90 = 20 × 1/90 × 1 = 20/90
3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
   45/30 = 45 × 3/30 × 3 = 135/90
4. Add the two like fractions:
   20/90 + 135/90 = 20 + 135/90 = 155/90
5. 155/90 simplified gives 31/18
6. So, 20/90 + 45/30 = 31/18
   In mixed form: 113/18

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