Answers

Add 3/42 and 45/56

3/42 + 45/56 is 7/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 56 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 42 × 4 = 168,
   3/42 = 3 × 4/42 × 4 = 12/168
3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
   45/56 = 45 × 3/56 × 3 = 135/168
4. Add the two like fractions:
   12/168 + 135/168 = 12 + 135/168 = 147/168
5. 147/168 simplified gives 7/8
6. So, 3/42 + 45/56 = 7/8

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