Answers

Add 10/42 and 8/21

10/42 + 8/21 is 13/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 21 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 42 × 1 = 42,
   10/42 = 10 × 1/42 × 1 = 10/42
3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
   8/21 = 8 × 2/21 × 2 = 16/42
4. Add the two like fractions:
   10/42 + 16/42 = 10 + 16/42 = 26/42
5. 26/42 simplified gives 13/21
6. So, 10/42 + 8/21 = 13/21

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