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1. |x|-3>1/3x
My first solution was 9/2x which is correct
And second was 9/4x which is wrong because it's meant to be minus and the graphs show that too.
But I can't seem to figure out where I'm going wrong with the working..
Using this to work out second solution gives me a positive
-(x-3)=1/3x
2. (Original post by Liampayneisapain)
|x|-3>1/3x
My first solution was 9/2x which is correct
And second was 9/4x which is wrong because it's meant to be minus and the graphs show that too.
But I can't seem to figure out where I'm going wrong with the working..
Using this to work out second solution gives me a positive
-(x-3)=1/3x
generally speaking if |x|>a this means -a<x<a
so the first thing you need to do is to isolate your |x| by moving the -3 to the other side then applying the formula I said
after that, go through every side of the inequality separately. so work through -a<x separate and x<a separate then combine the result. That should give you your -9/4<x for one of them!
3. (Original post by Liampayneisapain)
|x|-3>1/3x
My first solution was 9/2x which is correct
And second was 9/4x which is wrong because it's meant to be minus and the graphs show that too.
But I can't seem to figure out where I'm going wrong with the working..
Using this to work out second solution gives me a positive
-(x-3)=1/3x
your error is in mistaking |x|-3 for |x-3|

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