Add 80/21 and 8/16, Solve 3 17/21 + 8/16 as a fraction

Add 80/21 and 8/16

1^st number: 3 17/21, 2^nd number: 8/16

80/21 + 8/16 is 181/42.

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,
80/21 = 80 × 16/21 × 16 = 1280/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
8/16 = 8 × 21/16 × 21 = 168/336
Add the two like fractions:
1280/336 + 168/336 = 1280 + 168/336 = 1448/336
1448/336 simplified gives 181/42
So, 80/21 + 8/16 = 181/42
In mixed form: 413/42

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