Add 10/21 and 72/16, Solve 10/21 + 4 8/16 as a fraction

Add 10/21 and 72/16

1^st number: 10/21, 2^nd number: 4 8/16

10/21 + 72/16 is 209/42.

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

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 21 × 16 = 336,
10/21 = 10 × 16/21 × 16 = 160/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
72/16 = 72 × 21/16 × 21 = 1512/336
Add the two like fractions:
160/336 + 1512/336 = 160 + 1512/336 = 1672/336
1672/336 simplified gives 209/42
So, 10/21 + 72/16 = 209/42
In mixed form: 441/42

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