Add 10/8 and 2/21, Solve 1 2/8 + 2/21 as a fraction

Add 10/8 and 2/21

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

10/8 + 2/21 is 113/84.

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,
10/8 = 10 × 21/8 × 21 = 210/168
Likewise, for the 2nd fraction, since 21 × 8 = 168,
2/21 = 2 × 8/21 × 8 = 16/168
Add the two like fractions:
210/168 + 16/168 = 210 + 16/168 = 226/168
226/168 simplified gives 113/84
So, 10/8 + 2/21 = 113/84
In mixed form: 129/84

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