Add 6/21 and 21/8, Solve 6/21 + 2 5/8 as a fraction

Add 6/21 and 21/8

1^st number: 6/21, 2^nd number: 2 5/8

6/21 + 21/8 is 163/56.

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

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
6/21 = 6 × 8/21 × 8 = 48/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
21/8 = 21 × 21/8 × 21 = 441/168
Add the two like fractions:
48/168 + 441/168 = 48 + 441/168 = 489/168
489/168 simplified gives 163/56
So, 6/21 + 21/8 = 163/56
In mixed form: 251/56

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