Add 12/18 and 25/21, Solve 12/18 + 1 4/21 as a fraction

Add 12/18 and 25/21

1^st number: 12/18, 2^nd number: 1 4/21

12/18 + 25/21 is 13/7.

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

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
25/21 = 25 × 6/21 × 6 = 150/126
Add the two like fractions:
84/126 + 150/126 = 84 + 150/126 = 234/126
234/126 simplified gives 13/7
So, 12/18 + 25/21 = 13/7
In mixed form: 16/7

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