Add 18/9 and 21/49, Solve 2 0/9 + 21/49 as a fraction

Add 18/9 and 21/49

1^st number: 2 0/9, 2^nd number: 21/49

18/9 + 21/49 is 17/7.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 49 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 9 × 49 = 441,
18/9 = 18 × 49/9 × 49 = 882/441
Likewise, for the 2nd fraction, since 49 × 9 = 441,
21/49 = 21 × 9/49 × 9 = 189/441
Add the two like fractions:
882/441 + 189/441 = 882 + 189/441 = 1071/441
1071/441 simplified gives 17/7
So, 18/9 + 21/49 = 17/7
In mixed form: 23/7

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