Solutions by everydaycalculation.com

342 + 2856 is 47.

- 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 - For the 1st fraction, since 42 × 4 = 168,

342 = 3 × 442 × 4 = 12168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,

2856 = 28 × 356 × 3 = 84168 - Add the two like fractions:

12168 + 84168 = 12 + 84168 = 96168 - 96/168 simplified gives 47
- So, 3/42 + 28/56 = 4/7

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