Add 28/16 and 21/54, Solve 1 12/16 + 21/54 as a fraction

Add 28/16 and 21/54

1^st number: 1 12/16, 2^nd number: 21/54

28/16 + 21/54 is 77/36.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 54 is 432

Next, find the equivalent fraction of both fractional numbers with denominator 432
For the 1st fraction, since 16 × 27 = 432,
28/16 = 28 × 27/16 × 27 = 756/432
Likewise, for the 2nd fraction, since 54 × 8 = 432,
21/54 = 21 × 8/54 × 8 = 168/432
Add the two like fractions:
756/432 + 168/432 = 756 + 168/432 = 924/432
924/432 simplified gives 77/36
So, 28/16 + 21/54 = 77/36
In mixed form: 25/36

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