Add 45/21 and 81/54, Solve 2 3/21 + 1 27/54 as a fraction

Add 45/21 and 81/54

1^st number: 2 3/21, 2^nd number: 1 27/54

45/21 + 81/54 is 51/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
45/21 = 45 × 18/21 × 18 = 810/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
81/54 = 81 × 7/54 × 7 = 567/378
Add the two like fractions:
810/378 + 567/378 = 810 + 567/378 = 1377/378
1377/378 simplified gives 51/14
So, 45/21 + 81/54 = 51/14
In mixed form: 39/14

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