Question 1089814
42x -13 < 42/x 
:
42x -13 -42/x < 0
:
(42x^2 -13x -42) / x < 0
:
(x^2 -(13x/42) -1) / x < 0
:
[(x -(7/6)) * (x +(6/7))] / x < 0
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x not = 0
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solutions are 0 < x < 7/6 and x < -6/7
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interval notation (0, 7/6) and (-infinity, -6/7)
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