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x in (-oo:+oo)
12*x-((2/5)*x)-2 < 3 // - 3
12*x-((2/5)*x)-3-2 < 0
12*x+(-2/5)*x-3-2 < 0
58/5*x-5 < 0 // + 5
58/5*x < 5 // : 58/5
x < 5/58/5
x < 25/58
x in (-oo:25/58)
(-oo:25/58)
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