Add 16/8 and 9/21, Solve 2 0/8 + 9/21 as a fraction

Add 16/8 and 9/21

1^st number: 2 0/8, 2^nd number: 9/21

16/8 + 9/21 is 17/7.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 8 × 21 = 168,
16/8 = 16 × 21/8 × 21 = 336/168
Likewise, for the 2nd fraction, since 21 × 8 = 168,
9/21 = 9 × 8/21 × 8 = 72/168
Add the two like fractions:
336/168 + 72/168 = 336 + 72/168 = 408/168
408/168 simplified gives 17/7
So, 16/8 + 9/21 = 17/7
In mixed form: 23/7

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