Add 30/18 and 25/21, Solve 1 12/18 + 1 4/21 as a fraction

Add 30/18 and 25/21

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

30/18 + 25/21 is 20/7.

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,
30/18 = 30 × 7/18 × 7 = 210/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
25/21 = 25 × 6/21 × 6 = 150/126
Add the two like fractions:
210/126 + 150/126 = 210 + 150/126 = 360/126
360/126 simplified gives 20/7
So, 30/18 + 25/21 = 20/7
In mixed form: 26/7

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