Answers

Add 1/42 and 21/60

1/42 + 21/60 is 157/420.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 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 60 × 7 = 420,
   21/60 = 21 × 7/60 × 7 = 147/420
4. Add the two like fractions:
   10/420 + 147/420 = 10 + 147/420 = 157/420
5. So, 1/42 + 21/60 = 157/420

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