Add 12/30 and 30/21, Solve 12/30 + 1 9/21 as a fraction

Add 12/30 and 30/21

1^st number: 12/30, 2^nd number: 1 9/21

12/30 + 30/21 is 64/35.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
30/21 = 30 × 10/21 × 10 = 300/210
Add the two like fractions:
84/210 + 300/210 = 84 + 300/210 = 384/210
384/210 simplified gives 64/35
So, 12/30 + 30/21 = 64/35
In mixed form: 129/35

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