Add 12/35 and 30/21, Solve 12/35 + 1 9/21 as a fraction

Add 12/35 and 30/21

1^st number: 12/35, 2^nd number: 1 9/21

12/35 + 30/21 is 62/35.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 35 × 3 = 105,
12/35 = 12 × 3/35 × 3 = 36/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
30/21 = 30 × 5/21 × 5 = 150/105
Add the two like fractions:
36/105 + 150/105 = 36 + 150/105 = 186/105
186/105 simplified gives 62/35
So, 12/35 + 30/21 = 62/35
In mixed form: 127/35

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