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40*x-19 = (-8/1)*(-5*x-6) // - (-8/1)*(-5*x-6)
40*x-((-8/1)*(-5*x-6))-19 = 0
8*(-5*x-6)+40*x-19 = 0
8*(-5*x-6)+40*x-19 = 0
-48-19 = 0
-67 = 0
-67 = 0
-67 = 0
x belongs to the empty set
x belongs to the empty set
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