SOLUTION: -2x < x + 1 < 7 the solution is {xlx??<x<??} Can someone explain this to me again.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: -2x < x + 1 < 7 the solution is {xlx??<x<??} Can someone explain this to me again.      Log On


   

Question 138886: -2x < x + 1 < 7
the solution is {xlx?? Can someone explain this to me again.
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
-2x < x + 1 < 7
.
-2x -2x-x<1
-3x<1
x>-1/3 reverse the inequality sign when mult. or div. by a negative number.
.
x+1<7
x<6
.
-1/3 < x < 6
.
Ed