Add 21/9 and 98/12, Solve 2 3/9 + 8 2/12 as a fraction

Add 21/9 and 98/12

1^st number: 2 3/9, 2^nd number: 8 2/12

21/9 + 98/12 is 21/2.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 9 × 4 = 36,
21/9 = 21 × 4/9 × 4 = 84/36
Likewise, for the 2nd fraction, since 12 × 3 = 36,
98/12 = 98 × 3/12 × 3 = 294/36
Add the two like fractions:
84/36 + 294/36 = 84 + 294/36 = 378/36
378/36 simplified gives 21/2
So, 21/9 + 98/12 = 21/2
In mixed form: 101/2

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