Add 24/21 and 15/42, Solve 1 3/21 + 15/42 as a fraction

Add 24/21 and 15/42

1^st number: 1 3/21, 2^nd number: 15/42

24/21 + 15/42 is 3/2.

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

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
24/21 = 24 × 2/21 × 2 = 48/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
15/42 = 15 × 1/42 × 1 = 15/42
Add the two like fractions:
48/42 + 15/42 = 48 + 15/42 = 63/42
63/42 simplified gives 3/2
So, 24/21 + 15/42 = 3/2
In mixed form: 11/2

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