Answers

Add 70/42 and 21/54

1^st number: 1 28/42, 2^nd number: 21/54

70/42 + 21/54 is 37/18.

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,
   21/54 = 21 × 7/54 × 7 = 147/378
4. Add the two like fractions:
   630/378 + 147/378 = 630 + 147/378 = 777/378
5. 777/378 simplified gives 37/18
6. So, 70/42 + 21/54 = 37/18
   In mixed form: 21/18

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