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x in (-oo:+oo)
(-6/5)*x = 5/6 // - 5/6
(-6/5)*x-(5/6) = 0
(-6/5)*x-5/6 = 0
-6/5*x-5/6 = 0 // + 5/6
-6/5*x = 5/6 // : -6/5
x = 5/6/(-6/5)
x = -25/36
x = -25/36
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