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ethompsonn

  • 3 years ago

Solve (x + 2 < 5) ∩ (x - 7 > -6). {x | 1 < x < 3} {x | x < 3 or x > 1} {all real numbers}

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  1. Umangiasd
    • 3 years ago
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    it's not x<3 or x>1 but x<3 AND x>1 (First answer) why? the intersection means that you use "the repeated" data. So it will be (x+2<5=>x<3) (x-7>-6=>x>1) -> so its x ∈ (1,3) (The interval is open in both extremes)

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