Add 72/30 and 40/12, Solve 2 12/30 + 3 4/12 as a fraction

Add 72/30 and 40/12

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

72/30 + 40/12 is 86/15.

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,
72/30 = 72 × 2/30 × 2 = 144/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60
Add the two like fractions:
144/60 + 200/60 = 144 + 200/60 = 344/60
344/60 simplified gives 86/15
So, 72/30 + 40/12 = 86/15
In mixed form: 511/15

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