Answers

Add 70/42 and 45/54

1^st number: 1 28/42, 2^nd number: 45/54

70/42 + 45/54 is 5/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 42 × 9 = 378,
   70/42 = 70 × 9/42 × 9 = 630/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   45/54 = 45 × 7/54 × 7 = 315/378
4. Add the two like fractions:
   630/378 + 315/378 = 630 + 315/378 = 945/378
5. 945/378 simplified gives 5/2
6. So, 70/42 + 45/54 = 5/2
   In mixed form: 21/2

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