Question 1207691
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Find a and b.


If -4 < x < 0, then a < x/2 < b.
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You are given the starting inequality

    -4 < x < 0.


Divide all three terms by 2.  You will get

    -2 < x/2 < 0.


Compare it with  a < x/2 < b.


Obviously, you should take  a = -2,  b = 0.


<U>ANSWER</U>.  a = -2;  b = 0.
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Solved.