Question 88127
-3 <= x <= -1 
This double statement cannot be further simplified because it
makes a final statement regarding the variable "x".
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But to answer your qustion:
If you had the following satement,
-5<=x-3<7, you could add 3 along the line to get
the following :
-5+3<=x-3+3<7+3
Then you could simplify this statement as:
-2 <= x < 10
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Cheers,
Stan H.