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

Add 12/15 and 40/12

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

12/15 + 40/12 is 62/15.

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

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 15 × 4 = 60,
12/15 = 12 × 4/15 × 4 = 48/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60
Add the two like fractions:
48/60 + 200/60 = 48 + 200/60 = 248/60
248/60 simplified gives 62/15
So, 12/15 + 40/12 = 62/15
In mixed form: 42/15

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