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x in (-oo:+oo)
-26 = x/9-10 // - x/9-10
10-(x/9)-26 = 0
-1/9*x-16 = 0 // + 16
-1/9*x = 16 // : -1/9
x = 16/(-1/9)
x = -144
x = -144
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