Add 21/18 and 18/12, Solve 1 3/18 + 1 6/12 as a fraction

Add 21/18 and 18/12

1^st number: 1 3/18, 2^nd number: 1 6/12

21/18 + 18/12 is 8/3.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36
Likewise, for the 2nd fraction, since 12 × 3 = 36,
18/12 = 18 × 3/12 × 3 = 54/36
Add the two like fractions:
42/36 + 54/36 = 42 + 54/36 = 96/36
96/36 simplified gives 8/3
So, 21/18 + 18/12 = 8/3
In mixed form: 22/3

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