Add 40/12 and 6/15, Solve 3 4/12 + 6/15 as a fraction

Add 40/12 and 6/15

1^st number: 3 4/12, 2^nd number: 6/15

40/12 + 6/15 is 56/15.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60
Likewise, for the 2nd fraction, since 15 × 4 = 60,
6/15 = 6 × 4/15 × 4 = 24/60
Add the two like fractions:
200/60 + 24/60 = 200 + 24/60 = 224/60
224/60 simplified gives 56/15
So, 40/12 + 6/15 = 56/15
In mixed form: 311/15

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