Answers

Add 12/42 and 50/45

1^st number: 12/42, 2^nd number: 1 5/45

12/42 + 50/45 is 88/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 45 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   12/42 = 12 × 15/42 × 15 = 180/630
3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
   50/45 = 50 × 14/45 × 14 = 700/630
4. Add the two like fractions:
   180/630 + 700/630 = 180 + 700/630 = 880/630
5. 880/630 simplified gives 88/63
6. So, 12/42 + 50/45 = 88/63
   In mixed form: 125/63

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