Add 24/21 and 12/18, Solve 1 3/21 + 12/18 as a fraction

Add 24/21 and 12/18

1^st number: 1 3/21, 2^nd number: 12/18

24/21 + 12/18 is 38/21.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
24/21 = 24 × 6/21 × 6 = 144/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126
Add the two like fractions:
144/126 + 84/126 = 144 + 84/126 = 228/126
228/126 simplified gives 38/21
So, 24/21 + 12/18 = 38/21
In mixed form: 117/21

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