Answers

Add 12/45 and 54/42

1^st number: 12/45, 2^nd number: 1 12/42

12/45 + 54/42 is 163/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 42 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 45 × 14 = 630,
   12/45 = 12 × 14/45 × 14 = 168/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   54/42 = 54 × 15/42 × 15 = 810/630
4. Add the two like fractions:
   168/630 + 810/630 = 168 + 810/630 = 978/630
5. 978/630 simplified gives 163/105
6. So, 12/45 + 54/42 = 163/105
   In mixed form: 158/105

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