Add 21/6 and 72/56, Solve 3 3/6 + 1 16/56 as a fraction

Add 21/6 and 72/56

1^st number: 3 3/6, 2^nd number: 1 16/56

21/6 + 72/56 is 67/14.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 56 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 6 × 28 = 168,
21/6 = 21 × 28/6 × 28 = 588/168
Likewise, for the 2nd fraction, since 56 × 3 = 168,
72/56 = 72 × 3/56 × 3 = 216/168
Add the two like fractions:
588/168 + 216/168 = 588 + 216/168 = 804/168
804/168 simplified gives 67/14
So, 21/6 + 72/56 = 67/14
In mixed form: 411/14

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