Add 18/84 and 12/9, Solve 18/84 + 1 3/9 as a fraction

Add 18/84 and 12/9

1^st number: 18/84, 2^nd number: 1 3/9

18/84 + 12/9 is 65/42.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 84 × 3 = 252,
18/84 = 18 × 3/84 × 3 = 54/252
Likewise, for the 2nd fraction, since 9 × 28 = 252,
12/9 = 12 × 28/9 × 28 = 336/252
Add the two like fractions:
54/252 + 336/252 = 54 + 336/252 = 390/252
390/252 simplified gives 65/42
So, 18/84 + 12/9 = 65/42
In mixed form: 123/42

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