Answers

Add 9/18 and 21/42

9/18 + 21/42 is 1/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   9/18 = 9 × 7/18 × 7 = 63/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   21/42 = 21 × 3/42 × 3 = 63/126
4. Add the two like fractions:
   63/126 + 63/126 = 63 + 63/126 = 126/126
5. 126/126 simplified gives 1/1
6. So, 9/18 + 21/42 = 1/1

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