SOLUTION: Solve: -10 <_ 3x-9 <_ -2 (the _ are supposed to be under the <) {x | ?? <_ x <_ ??} (again the _ is supposedto be under the <) Can someone hlp me with this. Do i add 2

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: Solve: -10 <_ 3x-9 <_ -2 (the _ are supposed to be under the <) {x | ?? <_ x <_ ??} (again the _ is supposedto be under the <) Can someone hlp me with this. Do i add 2       Log On


   

Question 138539: Solve: -10 <_ 3x-9 <_ -2 (the _ are supposed to be under the <)
{x | ?? <_ x <_ ??} (again the _ is supposedto be under the <)
Can someone hlp me with this. Do i add 2 to each equation first??
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
-10 <= 3x-9 <= -2
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Since you want to solve for "x", you work from the inside out.
Add 9 along the line to get:
-1 <= 3x <= 7
Divide by 3 along the line to get:
-1/3 <= x <= 7/3
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Cheers,
Stan H.