Add 6/18 and 21/4, Solve 6/18 + 5 1/4 as a fraction

Add 6/18 and 21/4

1^st number: 6/18, 2^nd number: 5 1/4

6/18 + 21/4 is 67/12.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 18 × 2 = 36,
6/18 = 6 × 2/18 × 2 = 12/36
Likewise, for the 2nd fraction, since 4 × 9 = 36,
21/4 = 21 × 9/4 × 9 = 189/36
Add the two like fractions:
12/36 + 189/36 = 12 + 189/36 = 201/36
201/36 simplified gives 67/12
So, 6/18 + 21/4 = 67/12
In mixed form: 57/12

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