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(5/8)*x+(1/16)*x = x+5/16 // - x+5/16
(5/8)*x+(1/16)*x-x-(5/16) = 0
(5/8)*x+(1/16)*x-x-5/16 = 0
-5/16*x-5/16 = 0 // + 5/16
-5/16*x = 5/16 // : -5/16
x = 5/16/(-5/16)
x = -1
x = -1
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