Add 72/28 and 3/21, Solve 2 16/28 + 3/21 as a fraction

Add 72/28 and 3/21

1^st number: 2 16/28, 2^nd number: 3/21

72/28 + 3/21 is 19/7.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 28 × 3 = 84,
72/28 = 72 × 3/28 × 3 = 216/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
3/21 = 3 × 4/21 × 4 = 12/84
Add the two like fractions:
216/84 + 12/84 = 216 + 12/84 = 228/84
228/84 simplified gives 19/7
So, 72/28 + 3/21 = 19/7
In mixed form: 25/7

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