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x in (-oo:+oo)
5*((-3/5)*x-(2/5))-6*x = -8 // + 8
5*((-3/5)*x-(2/5))-6*x+8 = 0
5*((-3/5)*x-2/5)-6*x+8 = 0
5*(-3/5*x-2/5)-6*x+8 = 0
5*(-3/5*x-2/5)-6*x+8 = 0
8-9*x-2 = 0
6-9*x = 0
6-9*x = 0
6-9*x = 0 // - 6
-9*x = -6 // : -9
x = -6/(-9)
x = 2/3
x = 2/3
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