Add 18/16 and 54/21, Solve 1 2/16 + 2 12/21 as a fraction

Add 18/16 and 54/21

1^st number: 1 2/16, 2^nd number: 2 12/21

18/16 + 54/21 is 207/56.

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,
54/21 = 54 × 16/21 × 16 = 864/336
Add the two like fractions:
378/336 + 864/336 = 378 + 864/336 = 1242/336
1242/336 simplified gives 207/56
So, 18/16 + 54/21 = 207/56
In mixed form: 339/56

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