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x in (-oo:+oo)
32/3 = 5*x+6*x+7 // - 5*x+6*x+7
32/3-(5*x)-(6*x)-7 = 0
32/3-5*x-6*x-7 = 0
11/3-11*x = 0 // - 11/3
-11*x = -11/3 // : -11
x = -11/3/(-11)
x = 1/3
x = 1/3
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