Add 54/3 and 21/42, Solve 18 0/3 + 21/42 as a fraction

Add 54/3 and 21/42

1^st number: 18 0/3, 2^nd number: 21/42

54/3 + 21/42 is 37/2.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 3 × 14 = 42,
54/3 = 54 × 14/3 × 14 = 756/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42
Add the two like fractions:
756/42 + 21/42 = 756 + 21/42 = 777/42
777/42 simplified gives 37/2
So, 54/3 + 21/42 = 37/2
In mixed form: 181/2

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