Add 9/21 and 6/8
9/21 + 6/8 is 33/28.
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,
9/21 = 9 × 8/21 × 8 = 72/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
6/8 = 6 × 21/8 × 21 = 126/168 - Add the two like fractions:
72/168 + 126/168 = 72 + 126/168 = 198/168 - 198/168 simplified gives 33/28
- So, 9/21 + 6/8 = 33/28
In mixed form: 15/28
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