Answers

Add 1/42 and 16/20

1/42 + 16/20 is 173/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 20 is 420
2. For the 1st fraction, since 42 × 10 = 420,
   1/42 = 1 × 10/42 × 10 = 10/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   16/20 = 16 × 21/20 × 21 = 336/420
4. Add the two fractions:
   10/420 + 336/420 = 10 + 336/420 = 346/420
5. After reducing the fraction, the answer is 173/210

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