Add 54/14 and 45/42, Solve 3 12/14 + 1 3/42 as a fraction

Add 54/14 and 45/42

1^st number: 3 12/14, 2^nd number: 1 3/42

54/14 + 45/42 is 69/14.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 14 × 3 = 42,
54/14 = 54 × 3/14 × 3 = 162/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
45/42 = 45 × 1/42 × 1 = 45/42
Add the two like fractions:
162/42 + 45/42 = 162 + 45/42 = 207/42
207/42 simplified gives 69/14
So, 54/14 + 45/42 = 69/14
In mixed form: 413/14

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