Answers

Add 72/18 and 45/42

1^st number: 4 0/18, 2^nd number: 1 3/42

72/18 + 45/42 is 71/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   72/18 = 72 × 7/18 × 7 = 504/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   45/42 = 45 × 3/42 × 3 = 135/126
4. Add the two like fractions:
   504/126 + 135/126 = 504 + 135/126 = 639/126
5. 639/126 simplified gives 71/14
6. So, 72/18 + 45/42 = 71/14
   In mixed form: 51/14

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