Add 72/16 and 56/21, Solve 4 8/16 + 2 14/21 as a fraction

Add 72/16 and 56/21

1^st number: 4 8/16, 2^nd number: 2 14/21

72/16 + 56/21 is 43/6.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 16 × 21 = 336,
72/16 = 72 × 21/16 × 21 = 1512/336
Likewise, for the 2nd fraction, since 21 × 16 = 336,
56/21 = 56 × 16/21 × 16 = 896/336
Add the two like fractions:
1512/336 + 896/336 = 1512 + 896/336 = 2408/336
2408/336 simplified gives 43/6
So, 72/16 + 56/21 = 43/6
In mixed form: 71/6

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