Answers

Add 72/30 and 45/42

1^st number: 2 12/30, 2^nd number: 1 3/42

72/30 + 45/42 is 243/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 30 × 7 = 210,
   72/30 = 72 × 7/30 × 7 = 504/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   45/42 = 45 × 5/42 × 5 = 225/210
4. Add the two like fractions:
   504/210 + 225/210 = 504 + 225/210 = 729/210
5. 729/210 simplified gives 243/70
6. So, 72/30 + 45/42 = 243/70
   In mixed form: 333/70

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