Answers

Add 64/40 and 4/42

1^st number: 1 24/40, 2^nd number: 4/42

64/40 + 4/42 is 178/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   64/40 = 64 × 21/40 × 21 = 1344/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   4/42 = 4 × 20/42 × 20 = 80/840
4. Add the two like fractions:
   1344/840 + 80/840 = 1344 + 80/840 = 1424/840
5. 1424/840 simplified gives 178/105
6. So, 64/40 + 4/42 = 178/105
   In mixed form: 173/105

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