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13-09-2015
Mathematics

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The sum of a number b and 3 is greater than 8 and less than 12

Respuesta :

Panoyin Panoyin

14-09-2015

12 < b + 3 < 8
- 3 - 3 - 3
9 > b > 5

Solution Set: x ∈ (5, 9)

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