Answers

Add 10/42 and 80/40

1^st number: 10/42, 2^nd number: 2 0/40

10/42 + 80/40 is 47/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 42 × 20 = 840,
   10/42 = 10 × 20/42 × 20 = 200/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   80/40 = 80 × 21/40 × 21 = 1680/840
4. Add the two like fractions:
   200/840 + 1680/840 = 200 + 1680/840 = 1880/840
5. 1880/840 simplified gives 47/21
6. So, 10/42 + 80/40 = 47/21
   In mixed form: 25/21

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