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x in (-oo:+oo)
-x-(6*x)-10 = -146/9 // + -146/9
-x-(6*x)-(-146/9)-10 = 0
146/9-x-6*x-10 = 0
56/9-7*x = 0 // - 56/9
-7*x = -56/9 // : -7
x = -56/9/(-7)
x = 8/9
x = 8/9
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