Add 12/42 and 25/21, Solve 12/42 + 1 4/21 as a fraction

Add 12/42 and 25/21

1^st number: 12/42, 2^nd number: 1 4/21

12/42 + 25/21 is 31/21.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
12/42 = 12 × 1/42 × 1 = 12/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
25/21 = 25 × 2/21 × 2 = 50/42
Add the two like fractions:
12/42 + 50/42 = 12 + 50/42 = 62/42
62/42 simplified gives 31/21
So, 12/42 + 25/21 = 31/21
In mixed form: 110/21

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