Add 54/14 and 56/12, Solve 3 12/14 + 4 8/12 as a fraction

Add 54/14 and 56/12

1^st number: 3 12/14, 2^nd number: 4 8/12

54/14 + 56/12 is 179/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 14 × 6 = 84,
54/14 = 54 × 6/14 × 6 = 324/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
56/12 = 56 × 7/12 × 7 = 392/84
Add the two like fractions:
324/84 + 392/84 = 324 + 392/84 = 716/84
716/84 simplified gives 179/21
So, 54/14 + 56/12 = 179/21
In mixed form: 811/21

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