Add 3/8 and 24/21, Solve 3/8 + 1 3/21 as a fraction

Add 3/8 and 24/21

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

3/8 + 24/21 is 85/56.

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,
3/8 = 3 × 21/8 × 21 = 63/168
Likewise, for the 2nd fraction, since 21 × 8 = 168,
24/21 = 24 × 8/21 × 8 = 192/168
Add the two like fractions:
63/168 + 192/168 = 63 + 192/168 = 255/168
255/168 simplified gives 85/56
So, 3/8 + 24/21 = 85/56
In mixed form: 129/56

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