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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

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Panoyin
Panoyin Panoyin
  • 14-09-2015
12 < b + 3 < 8
- 3        - 3  - 3
  9 > b       > 5

Solution Set: x ∈ (5, 9)
Answer Link

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