Answers

Add 45/30 and 72/20

1^st number: 1 15/30, 2^nd number: 3 12/20

45/30 + 72/20 is 51/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 30 × 2 = 60,
   45/30 = 45 × 2/30 × 2 = 90/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   72/20 = 72 × 3/20 × 3 = 216/60
4. Add the two like fractions:
   90/60 + 216/60 = 90 + 216/60 = 306/60
5. 306/60 simplified gives 51/10
6. So, 45/30 + 72/20 = 51/10
   In mixed form: 51/10

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