Add 30/72 and 21/6, Solve 30/72 + 3 3/6 as a fraction

Add 30/72 and 21/6

1^st number: 30/72, 2^nd number: 3 3/6

30/72 + 21/6 is 47/12.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 6 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72
Likewise, for the 2nd fraction, since 6 × 12 = 72,
21/6 = 21 × 12/6 × 12 = 252/72
Add the two like fractions:
30/72 + 252/72 = 30 + 252/72 = 282/72
282/72 simplified gives 47/12
So, 30/72 + 21/6 = 47/12
In mixed form: 311/12

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