Answers

Add 3/60 and 1/70

3/60 + 1/70 is 9/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   3/60 = 3 × 7/60 × 7 = 21/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   1/70 = 1 × 6/70 × 6 = 6/420
4. Add the two like fractions:
   21/420 + 6/420 = 21 + 6/420 = 27/420
5. 27/420 simplified gives 9/140
6. So, 3/60 + 1/70 = 9/140

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