Answers

Add 64/42 and 70/20

1^st number: 1 22/42, 2^nd number: 3 10/20

64/42 + 70/20 is 211/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 42 × 10 = 420,
   64/42 = 64 × 10/42 × 10 = 640/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   70/20 = 70 × 21/20 × 21 = 1470/420
4. Add the two like fractions:
   640/420 + 1470/420 = 640 + 1470/420 = 2110/420
5. 2110/420 simplified gives 211/42
6. So, 64/42 + 70/20 = 211/42
   In mixed form: 51/42

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