Help!! I need help finding x. 2x – (7 + x) < x 2x - 7 - x <= x x - 7 <= x The x cancels out, so is the answer that circle with the diagonal line through it?
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Originally Posted by ashleydevos Help!! I need help finding x. 2x – (7 + x) < x 2x - 7 - x <= x x - 7 <= x The x cancels out, so is the answer that circle with the diagonal line through it? you did not finish, subtract from both sides ... a true statement ... therefore the inequality is true for all
So this equality holds for any , because is indeed smaller than . EDIT : erf Skeeter beat me to it
How do you write it in interval notation then? [-7<= ∞)???
No, no ! Regardless of the value of , the inequality holds, so I guess you could write this , or : , A less elegant but more direct way to write it could be : , .
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