Add 42/21 and 25/54, Solve 2 0/21 + 25/54 as a fraction

Add 42/21 and 25/54

1^st number: 2 0/21, 2^nd number: 25/54

42/21 + 25/54 is 133/54.

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,
42/21 = 42 × 18/21 × 18 = 756/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
25/54 = 25 × 7/54 × 7 = 175/378
Add the two like fractions:
756/378 + 175/378 = 756 + 175/378 = 931/378
931/378 simplified gives 133/54
So, 42/21 + 25/54 = 133/54
In mixed form: 225/54

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