Add 12/42 and 24/21, Solve 12/42 + 1 3/21 as a fraction

Add 12/42 and 24/21

1^st number: 12/42, 2^nd number: 1 3/21

12/42 + 24/21 is 10/7.

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,
24/21 = 24 × 2/21 × 2 = 48/42
Add the two like fractions:
12/42 + 48/42 = 12 + 48/42 = 60/42
60/42 simplified gives 10/7
So, 12/42 + 24/21 = 10/7
In mixed form: 13/7

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