Add 12/30 and 40/12, Solve 12/30 + 3 4/12 as a fraction

Add 12/30 and 40/12

1^st number: 12/30, 2^nd number: 3 4/12

12/30 + 40/12 is 56/15.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 30 × 2 = 60,
12/30 = 12 × 2/30 × 2 = 24/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60
Add the two like fractions:
24/60 + 200/60 = 24 + 200/60 = 224/60
224/60 simplified gives 56/15
So, 12/30 + 40/12 = 56/15
In mixed form: 311/15

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