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-4*x-6 = (-4/5)*x-(14/5) // - (-4/5)*x-(14/5)
14/5-4*x-((-4/5)*x)-6 = 0
(4/5)*x-4*x+14/5-6 = 0
-16/5*x-16/5 = 0 // + 16/5
-16/5*x = 16/5 // : -16/5
x = 16/5/(-16/5)
x = -1
x = -1
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