Add 8/21 and 20/8
1st number: 8/21, 2nd number: 2 4/8
8/21 + 20/8 is 121/42.
Steps for adding fractions
- 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,
8/21 = 8 × 8/21 × 8 = 64/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
20/8 = 20 × 21/8 × 21 = 420/168 - Add the two like fractions:
64/168 + 420/168 = 64 + 420/168 = 484/168 - 484/168 simplified gives 121/42
- So, 8/21 + 20/8 = 121/42
In mixed form: 237/42
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