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(1/2)*(8*x+11)+1/2 = 0
1/2*(8*x+11)+1/2 = 0
(1/2*2*(8*x+11))/2+1/2 = 0
1/2*2*(8*x+11)+1 = 0
8*x+12 = 0
(8*x+12)/2 = 0
(8*x+12)/2 = 0 // * 2
8*x+12 = 0
8*x+12 = 0 // - 12
8*x = -12 // : 8
x = -12/8
x = -3/2
x = -3/2
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