Add 84/8 and 7/21
1st number: 10 4/8, 2nd number: 7/21
84/8 + 7/21 is 65/6.
Steps for adding fractions
- 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,
84/8 = 84 × 21/8 × 21 = 1764/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
7/21 = 7 × 8/21 × 8 = 56/168 - Add the two like fractions:
1764/168 + 56/168 = 1764 + 56/168 = 1820/168 - 1820/168 simplified gives 65/6
- So, 84/8 + 7/21 = 65/6
In mixed form: 105/6
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