Solutions by everydaycalculation.com

542 + 1256 is 13.

- 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,

542 = 5 × 442 × 4 = 20168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,

1256 = 12 × 356 × 3 = 36168 - Add the two like fractions:

20168 + 36168 = 20 + 36168 = 56168 - 56/168 simplified gives 13
- So, 5/42 + 12/56 = 1/3

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