Solutions by everydaycalculation.com

642 + 456 is 314.

- 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,

642 = 6 × 442 × 4 = 24168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,

456 = 4 × 356 × 3 = 12168 - Add the two like fractions:

24168 + 12168 = 24 + 12168 = 36168 - 36/168 simplified gives 314
- So, 6/42 + 4/56 = 3/14

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