Add 18/16 and 45/21, Solve 1 2/16 + 2 3/21 as a fraction

Add 18/16 and 45/21

1^st number: 1 2/16, 2^nd number: 2 3/21

18/16 + 45/21 is 183/56.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 16 × 21 = 336,
18/16 = 18 × 21/16 × 21 = 378/336
Likewise, for the 2nd fraction, since 21 × 16 = 336,
45/21 = 45 × 16/21 × 16 = 720/336
Add the two like fractions:
378/336 + 720/336 = 378 + 720/336 = 1098/336
1098/336 simplified gives 183/56
So, 18/16 + 45/21 = 183/56
In mixed form: 315/56

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