Add 54/14 and 18/12, Solve 3 12/14 + 1 6/12 as a fraction

Add 54/14 and 18/12

1^st number: 3 12/14, 2^nd number: 1 6/12

54/14 + 18/12 is 75/14.

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,
18/12 = 18 × 7/12 × 7 = 126/84
Add the two like fractions:
324/84 + 126/84 = 324 + 126/84 = 450/84
450/84 simplified gives 75/14
So, 54/14 + 18/12 = 75/14
In mixed form: 55/14

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