Solutions by everydaycalculation.com

1^{st} number: 1 1/4, 2^{nd} number: 6/8

54 + 68 is 21.

- Find the least common denominator or LCM of the two denominators:

LCM of 4 and 8 is**8**

Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,

54 = 5 × 24 × 2 = 108 - Likewise, for the 2nd fraction, since 8 × 1 = 8,

68 = 6 × 18 × 1 = 68 - Add the two like fractions:

108 + 68 = 10 + 68 = 168 - 16/8 simplified gives 21
- So, 5/4 + 6/8 = 2/1

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