Answers

Add 72/45 and 42/30

1^st number: 1 27/45, 2^nd number: 1 12/30

72/45 + 42/30 is 3/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 30 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 45 × 2 = 90,
   72/45 = 72 × 2/45 × 2 = 144/90
3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
   42/30 = 42 × 3/30 × 3 = 126/90
4. Add the two like fractions:
   144/90 + 126/90 = 144 + 126/90 = 270/90
5. 270/90 simplified gives 3/1
6. So, 72/45 + 42/30 = 3/1

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