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x in (-oo:+oo)
-4*x-9 = -34/3 // + -34/3
-4*x-(-34/3)-9 = 0
34/3-4*x-9 = 0
7/3-4*x = 0 // - 7/3
-4*x = -7/3 // : -4
x = -7/3/(-4)
x = 7/12
x = 7/12
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