Add 21/14 and 42/54, Solve 1 7/14 + 42/54 as a fraction

Add 21/14 and 42/54

1^st number: 1 7/14, 2^nd number: 42/54

21/14 + 42/54 is 41/18.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 14 × 27 = 378,
21/14 = 21 × 27/14 × 27 = 567/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378
Add the two like fractions:
567/378 + 294/378 = 567 + 294/378 = 861/378
861/378 simplified gives 41/18
So, 21/14 + 42/54 = 41/18
In mixed form: 25/18

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