Add 12/18 and 30/7, Solve 12/18 + 4 2/7 as a fraction

Add 12/18 and 30/7

1^st number: 12/18, 2^nd number: 4 2/7

12/18 + 30/7 is 104/21.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 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 7 × 18 = 126,
30/7 = 30 × 18/7 × 18 = 540/126
Add the two like fractions:
84/126 + 540/126 = 84 + 540/126 = 624/126
624/126 simplified gives 104/21
So, 12/18 + 30/7 = 104/21
In mixed form: 420/21

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