Answers

Add 4/42 and 21/63

4/42 + 21/63 is 3/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   4/42 = 4 × 3/42 × 3 = 12/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   21/63 = 21 × 2/63 × 2 = 42/126
4. Add the two like fractions:
   12/126 + 42/126 = 12 + 42/126 = 54/126
5. 54/126 simplified gives 3/7
6. So, 4/42 + 21/63 = 3/7

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