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-(5*x)-8 = (1/2)*x-19 // - (1/2)*x-19
19-(5*x)-((1/2)*x)-8 = 0
(-1/2)*x-5*x-8+19 = 0
11-11/2*x = 0 // - 11
-11/2*x = -11 // : -11/2
x = -11/(-11/2)
x = 2
x = 2
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