Question 201409
(3x) /(7-x) > x
3x > x(7-x)
3x> 7x -x^2
0> -x^2 +4x
0> x(-x +4)
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x<0,,,,x>4
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check ,,x<0,,use x=-1, -3/8 > -1,,,,,ok
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0less than x less  than 4,,use x= 1,,,3/6>1,,,,,,not  true
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x>4,,,use  x=5,,,15/2 > 5,,,,,ok
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therefore ,,,x<0,,,x>4 
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