Answers

Add 6/42 and 15/90

6/42 + 15/90 is 13/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   6/42 = 6 × 15/42 × 15 = 90/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   15/90 = 15 × 7/90 × 7 = 105/630
4. Add the two like fractions:
   90/630 + 105/630 = 90 + 105/630 = 195/630
5. 195/630 simplified gives 13/42
6. So, 6/42 + 15/90 = 13/42

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