Answers

Add 64/20 and 15/90

1^st number: 3 4/20, 2^nd number: 15/90

64/20 + 15/90 is 101/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   64/20 = 64 × 9/20 × 9 = 576/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   15/90 = 15 × 2/90 × 2 = 30/180
4. Add the two like fractions:
   576/180 + 30/180 = 576 + 30/180 = 606/180
5. 606/180 simplified gives 101/30
6. So, 64/20 + 15/90 = 101/30
   In mixed form: 311/30

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