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x in (-oo:+oo)
(-8*x-7)/3 = 11 // - 11
(-8*x-7)/3-11 = 0
(-8*x-7)/3+(-11*3)/3 = 0
-8*x-11*3-7 = 0
-8*x-40 = 0
(-8*x-40)/3 = 0
(-8*x-40)/3 = 0 // * 3
-8*x-40 = 0
-8*x-40 = 0 // + 40
-8*x = 40 // : -8
x = 40/(-8)
x = -5
x = -5
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